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Finding the Fourth Proportional to 202,209.90, 303,169.05 and 132,128.70

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Solution

The fourth proportional to 202,209.90, 303,169.05 and 132,128.70 is: 198,097.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,209.90 : 303,169.05 = 132,128.70 : x
  2. Step 2: Convert to fraction form
    202,209.90/303,169.05 = 132,128.70/x
  3. Step 3: Cross multiply
    202,209.90x = 303,169.05 × 132,128.70
  4. Step 4: Simplify right side
    202,209.90x = 40,057,332,456.74
  5. Step 5: Solve for x
    x = 40,057,332,456.74/202,209.90
  6. Step 6: Final answer
    x = 198,097.78

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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.