If you were halfway between the equator and the north pole and one quarter of the way around the earth west of the prime meridian you will be at?

If you are halfway between the equator and the North Pole, you are at 45 degrees North latitude. Being a quarter of the way around the Earth west of the Prime Meridian means you are at 90 degrees West longitude. Therefore, you would be located at the coordinates 45°N, 90°W, which places you in the northern part of the United States, near the border of Wisconsin and Minnesota.