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Finding the Fourth Proportional to 125,162.47, 187,867.06 and 89,178.90

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Solution

The fourth proportional to 125,162.47, 187,867.06 and 89,178.90 is: 133,856.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,162.47 : 187,867.06 = 89,178.90 : x
  2. Step 2: Convert to fraction form
    125,162.47/187,867.06 = 89,178.90/x
  3. Step 3: Cross multiply
    125,162.47x = 187,867.06 × 89,178.90
  4. Step 4: Simplify right side
    125,162.47x = 16,753,776,829.59
  5. Step 5: Solve for x
    x = 16,753,776,829.59/125,162.47
  6. Step 6: Final answer
    x = 133,856.23

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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.