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Finding the Fourth Proportional to 115,294.78, 159,046.28 and 93,808.55

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Solution

The fourth proportional to 115,294.78, 159,046.28 and 93,808.55 is: 129,406.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,294.78 : 159,046.28 = 93,808.55 : x
  2. Step 2: Convert to fraction form
    115,294.78/159,046.28 = 93,808.55/x
  3. Step 3: Cross multiply
    115,294.78x = 159,046.28 × 93,808.55
  4. Step 4: Simplify right side
    115,294.78x = 14,919,900,909.69
  5. Step 5: Solve for x
    x = 14,919,900,909.69/115,294.78
  6. Step 6: Final answer
    x = 129,406.56

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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.