Does anyone else find that with your GW plugged in this aircraft wants to make approaches at really low speeds?

Here's how I plan and program my FMC so maybe someone can help or tell me if I am doing it wrong:

Empty Weight + Passenger & Cargo (via ACE) = ZFW

So plugging in the weights, I get something like this

115,000b + 28,551 = 143,551 ZFW

Then on an hour flight, at landing I should be near my reserve fuel, let's say that's 10,000lbs.

143,551lbs + 10,000lbs = 153,551lbs Gross Weight.

So, on approach if my weight is 153,551lbs shouldn't my approach be a lot faster then 115kts with 30* of flap?

My FMC keeps giving me very low approach speeds and I can't figure it out


Thanks for any help guys