Finding the Fourth Proportional to 157,757,157.83, 217,716,143.42 and 87,191,249.99
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Solution
The fourth proportional to 157,757,157.83, 217,716,143.42 and 87,191,249.99 is: 120,330,151.40
Step by Step Solution
- Step 1: Write the proportion equation
157,757,157.83 : 217,716,143.42 = 87,191,249.99 : x - Step 2: Convert to fraction form
157,757,157.83/217,716,143.42 = 87,191,249.99/x - Step 3: Cross multiply
157,757,157.83x = 217,716,143.42 × 87,191,249.99 - Step 4: Simplify right side
157,757,157.83x = 18,982,942,686,921,312 - Step 5: Solve for x
x = 18,982,942,686,921,312/157,757,157.83 - Step 6: Final answer
x = 120,330,151.40
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.