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Finding the Fourth Proportional to 125,272.96, 187,956.96 and 75,387.52

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Solution

The fourth proportional to 125,272.96, 187,956.96 and 75,387.52 is: 113,109.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,272.96 : 187,956.96 = 75,387.52 : x
  2. Step 2: Convert to fraction form
    125,272.96/187,956.96 = 75,387.52/x
  3. Step 3: Cross multiply
    125,272.96x = 187,956.96 × 75,387.52
  4. Step 4: Simplify right side
    125,272.96x = 14,169,609,081.14
  5. Step 5: Solve for x
    x = 14,169,609,081.14/125,272.96
  6. Step 6: Final answer
    x = 113,109.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.