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Finding the Fourth Proportional to 178,469.80, 267,639.90 and 89,693.80

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Solution

The fourth proportional to 178,469.80, 267,639.90 and 89,693.80 is: 134,508.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,469.80 : 267,639.90 = 89,693.80 : x
  2. Step 2: Convert to fraction form
    178,469.80/267,639.90 = 89,693.80/x
  3. Step 3: Cross multiply
    178,469.80x = 267,639.90 × 89,693.80
  4. Step 4: Simplify right side
    178,469.80x = 24,005,639,662.62
  5. Step 5: Solve for x
    x = 24,005,639,662.62/178,469.80
  6. Step 6: Final answer
    x = 134,508.13

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1.5x scale

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.