How many wins do I need to get from Silver 1 to Emerald?

With a 55% win rate, you need to play 360 games, win 198 of them and lose 162.

With a 60% win rate, you need to play 180 games, win 108 of them and lose 72.

With a 65% win rate, you need to play 120 games, win 78 of them and lose 42.

With a 70% win rate, you need to play 90 games, win 63 of them and lose 27.