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Finding the Fourth Proportional to 178,632.76, 267,538.38 and 99,571.90

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Solution

The fourth proportional to 178,632.76, 267,538.38 and 99,571.90 is: 149,128.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,632.76 : 267,538.38 = 99,571.90 : x
  2. Step 2: Convert to fraction form
    178,632.76/267,538.38 = 99,571.90/x
  3. Step 3: Cross multiply
    178,632.76x = 267,538.38 × 99,571.90
  4. Step 4: Simplify right side
    178,632.76x = 26,639,304,819.52
  5. Step 5: Solve for x
    x = 26,639,304,819.52/178,632.76
  6. Step 6: Final answer
    x = 149,128.89

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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.