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Finding the Fourth Proportional to 124,221.60, 185,943.60 and 89,229.60

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Solution

The fourth proportional to 124,221.60, 185,943.60 and 89,229.60 is: 133,565.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,221.60 : 185,943.60 = 89,229.60 : x
  2. Step 2: Convert to fraction form
    124,221.60/185,943.60 = 89,229.60/x
  3. Step 3: Cross multiply
    124,221.60x = 185,943.60 × 89,229.60
  4. Step 4: Simplify right side
    124,221.60x = 16,591,673,050.56
  5. Step 5: Solve for x
    x = 16,591,673,050.56/124,221.60
  6. Step 6: Final answer
    x = 133,565.12

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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.