Finding the Fourth Proportional to 138,981,816.09, 191,620,397.87 and 101,747,454.92
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Solution
The fourth proportional to 138,981,816.09, 191,620,397.87 and 101,747,454.92 is: 140,283,731.66
Step by Step Solution
- Step 1: Write the proportion equation
138,981,816.09 : 191,620,397.87 = 101,747,454.92 : x - Step 2: Convert to fraction form
138,981,816.09/191,620,397.87 = 101,747,454.92/x - Step 3: Cross multiply
138,981,816.09x = 191,620,397.87 × 101,747,454.92 - Step 4: Simplify right side
138,981,816.09x = 19,496,887,794,236,416 - Step 5: Solve for x
x = 19,496,887,794,236,416/138,981,816.09 - Step 6: Final answer
x = 140,283,731.66
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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.