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Finding the Fourth Proportional to 187,172.60, 280,728.13 and 67,204.71

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Solution

The fourth proportional to 187,172.60, 280,728.13 and 67,204.71 is: 100,796.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,172.60 : 280,728.13 = 67,204.71 : x
  2. Step 2: Convert to fraction form
    187,172.60/280,728.13 = 67,204.71/x
  3. Step 3: Cross multiply
    187,172.60x = 280,728.13 × 67,204.71
  4. Step 4: Simplify right side
    187,172.60x = 18,866,252,565.49
  5. Step 5: Solve for x
    x = 18,866,252,565.49/187,172.60
  6. Step 6: Final answer
    x = 100,796.02

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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.