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Finding the Fourth Proportional to 132,589.70, 198,865.86 and 69,389.04

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Solution

The fourth proportional to 132,589.70, 198,865.86 and 69,389.04 is: 104,073.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,589.70 : 198,865.86 = 69,389.04 : x
  2. Step 2: Convert to fraction form
    132,589.70/198,865.86 = 69,389.04/x
  3. Step 3: Cross multiply
    132,589.70x = 198,865.86 × 69,389.04
  4. Step 4: Simplify right side
    132,589.70x = 13,799,111,114.17
  5. Step 5: Solve for x
    x = 13,799,111,114.17/132,589.70
  6. Step 6: Final answer
    x = 104,073.78

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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.