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Finding the Fourth Proportional to 157,732.79, 217,663.07 and 89,748.38

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Solution

The fourth proportional to 157,732.79, 217,663.07 and 89,748.38 is: 123,848.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,732.79 : 217,663.07 = 89,748.38 : x
  2. Step 2: Convert to fraction form
    157,732.79/217,663.07 = 89,748.38/x
  3. Step 3: Cross multiply
    157,732.79x = 217,663.07 × 89,748.38
  4. Step 4: Simplify right side
    157,732.79x = 19,534,908,013.74
  5. Step 5: Solve for x
    x = 19,534,908,013.74/157,732.79
  6. Step 6: Final answer
    x = 123,848.11

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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.