Finding the Fourth Proportional to 121,863,534.76, 168,171,677.97 and 69,653,691.43
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Solution
The fourth proportional to 121,863,534.76, 168,171,677.97 and 69,653,691.43 is: 96,122,094.17
Step by Step Solution
- Step 1: Write the proportion equation
121,863,534.76 : 168,171,677.97 = 69,653,691.43 : x - Step 2: Convert to fraction form
121,863,534.76/168,171,677.97 = 69,653,691.43/x - Step 3: Cross multiply
121,863,534.76x = 168,171,677.97 × 69,653,691.43 - Step 4: Simplify right side
121,863,534.76x = 11,713,778,164,239,442 - Step 5: Solve for x
x = 11,713,778,164,239,442/121,863,534.76 - Step 6: Final answer
x = 96,122,094.17
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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.