New Jersey is about 112 times smaller than Saudi Arabia.

Saudi Arabia is approximately 2,149,690 sq km, while New Jersey is approximately 19,211 sq km, making New Jersey 0.89% the size of Saudi Arabia. Meanwhile, the population of Saudi Arabia is ~35.4 million people (26.6 million fewer people live in New Jersey).
Tip: This to-scale comparison of Saudi Arabia vs. New Jersey uses the Mercator projection, which distorts the size of regions near the poles.