It’s not only a matter of capacity. To receive 100k within your 150k-channel you need an inbound liquidity of 100k sats.

Let’s say you have opened the channel, then you will start with 150k outbound liquidity and zero inbound liquidity and thus won’t be able to receive a single sat at the beginning.

For your channel partner the opposite will be true. He won’t be able to send anything, but receive an amount up to 150k (not exactly 150k because of minimum channel reserves but that’s another topic).

Your channel liquidity (inbound/outbound) will shift over time depending on your interactions.