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Finding the Fourth Proportional to 132,404.60, 198,347.70 and 79,657.40

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Solution

The fourth proportional to 132,404.60, 198,347.70 and 79,657.40 is: 119,330.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,404.60 : 198,347.70 = 79,657.40 : x
  2. Step 2: Convert to fraction form
    132,404.60/198,347.70 = 79,657.40/x
  3. Step 3: Cross multiply
    132,404.60x = 198,347.70 × 79,657.40
  4. Step 4: Simplify right side
    132,404.60x = 15,799,862,077.98
  5. Step 5: Solve for x
    x = 15,799,862,077.98/132,404.60
  6. Step 6: Final answer
    x = 119,330.16

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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.