Louisiana is about 1.2 times smaller than Nicaragua.

Nicaragua is approximately 130,370 sq km, while Louisiana is approximately 112,825 sq km, making Louisiana 86.54% the size of Nicaragua. Meanwhile, the population of Nicaragua is ~6.3 million people (1.8 million fewer people live in Louisiana).
Tip: This to-scale comparison of Nicaragua vs. Louisiana uses the Mercator projection, which distorts the size of regions near the poles.