Finding the Fourth Proportional to 135,921,689.97, 187,557,951.11 and 76,373,529.09
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Solution
The fourth proportional to 135,921,689.97, 187,557,951.11 and 76,373,529.09 is: 105,387,614.28
Step by Step Solution
- Step 1: Write the proportion equation
135,921,689.97 : 187,557,951.11 = 76,373,529.09 : x - Step 2: Convert to fraction form
135,921,689.97/187,557,951.11 = 76,373,529.09/x - Step 3: Cross multiply
135,921,689.97x = 187,557,951.11 × 76,373,529.09 - Step 4: Simplify right side
135,921,689.97x = 14,324,462,634,778,514 - Step 5: Solve for x
x = 14,324,462,634,778,514/135,921,689.97 - Step 6: Final answer
x = 105,387,614.28
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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.