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Finding the Fourth Proportional to 177,987.40, 267,132.30 and 72,881.80

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Solution

The fourth proportional to 177,987.40, 267,132.30 and 72,881.80 is: 109,384.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,987.40 : 267,132.30 = 72,881.80 : x
  2. Step 2: Convert to fraction form
    177,987.40/267,132.30 = 72,881.80/x
  3. Step 3: Cross multiply
    177,987.40x = 267,132.30 × 72,881.80
  4. Step 4: Simplify right side
    177,987.40x = 19,469,082,862.14
  5. Step 5: Solve for x
    x = 19,469,082,862.14/177,987.40
  6. Step 6: Final answer
    x = 109,384.61

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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.