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Finding the Fourth Proportional to 132,309.60, 198,318.60 and 73,187.70

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Solution

The fourth proportional to 132,309.60, 198,318.60 and 73,187.70 is: 109,700.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,309.60 : 198,318.60 = 73,187.70 : x
  2. Step 2: Convert to fraction form
    132,309.60/198,318.60 = 73,187.70/x
  3. Step 3: Cross multiply
    132,309.60x = 198,318.60 × 73,187.70
  4. Step 4: Simplify right side
    132,309.60x = 14,514,482,201.22
  5. Step 5: Solve for x
    x = 14,514,482,201.22/132,309.60
  6. Step 6: Final answer
    x = 109,700.90

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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.