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Finding the Fourth Proportional to 187,668.80, 281,551.20 and 132,372.80

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Solution

The fourth proportional to 187,668.80, 281,551.20 and 132,372.80 is: 198,593.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,668.80 : 281,551.20 = 132,372.80 : x
  2. Step 2: Convert to fraction form
    187,668.80/281,551.20 = 132,372.80/x
  3. Step 3: Cross multiply
    187,668.80x = 281,551.20 × 132,372.80
  4. Step 4: Simplify right side
    187,668.80x = 37,269,720,687.36
  5. Step 5: Solve for x
    x = 37,269,720,687.36/187,668.80
  6. Step 6: Final answer
    x = 198,593.06

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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.