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Finding the Fourth Proportional to 185,545.92, 278,340 and 67,272.96

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Solution

The fourth proportional to 185,545.92, 278,340 and 67,272.96 is: 100,917.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,545.92 : 278,340 = 67,272.96 : x
  2. Step 2: Convert to fraction form
    185,545.92/278,340 = 67,272.96/x
  3. Step 3: Cross multiply
    185,545.92x = 278,340 × 67,272.96
  4. Step 4: Simplify right side
    185,545.92x = 18,724,755,686.40
  5. Step 5: Solve for x
    x = 18,724,755,686.40/185,545.92
  6. Step 6: Final answer
    x = 100,917.10

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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.