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Finding the Fourth Proportional to 102,508.60, 141,472.02 and 62,219.20

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Solution

The fourth proportional to 102,508.60, 141,472.02 and 62,219.20 is: 85,868.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,508.60 : 141,472.02 = 62,219.20 : x
  2. Step 2: Convert to fraction form
    102,508.60/141,472.02 = 62,219.20/x
  3. Step 3: Cross multiply
    102,508.60x = 141,472.02 × 62,219.20
  4. Step 4: Simplify right side
    102,508.60x = 8,802,275,906.78
  5. Step 5: Solve for x
    x = 8,802,275,906.78/102,508.60
  6. Step 6: Final answer
    x = 85,868.66

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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.