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Finding the Fourth Proportional to 138,414.70, 207,622.05 and 88,551.10

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Solution

The fourth proportional to 138,414.70, 207,622.05 and 88,551.10 is: 132,826.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,414.70 : 207,622.05 = 88,551.10 : x
  2. Step 2: Convert to fraction form
    138,414.70/207,622.05 = 88,551.10/x
  3. Step 3: Cross multiply
    138,414.70x = 207,622.05 × 88,551.10
  4. Step 4: Simplify right side
    138,414.70x = 18,385,160,911.76
  5. Step 5: Solve for x
    x = 18,385,160,911.76/138,414.70
  6. Step 6: Final answer
    x = 132,826.65

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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.