In 1942 and 1962 this wasn’t even enough to finish first in the league. Having a 100+ wins season, at least in the past, was often enough to get you in the World Series, but not to win it all. The Dodgers reached the World Series in 1941, 1953 and 1974 losing all three attempts.
Last World Series the Dodgers did win they compiled a 94-67 regular season record defeating the Mets (100-60) in the NLCS and the A’s (104-58) in the World Series.
The best team record in a 162-game season ever belongs to the 2001 Mariners (116-46). And they didn’t even reach the World Series, losing the ALCS against the Yankees (95-65).
So, while the first Dodger 100+ win season in 43 years would be awesome (the possibillity of ending in a .700+ season would be unique) it’s no guarantee for a ticket to the World Series.