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Finding the Fourth Proportional to 151,370.92, 208,937.10 and 87,737.32

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Solution

The fourth proportional to 151,370.92, 208,937.10 and 87,737.32 is: 121,103.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,370.92 : 208,937.10 = 87,737.32 : x
  2. Step 2: Convert to fraction form
    151,370.92/208,937.10 = 87,737.32/x
  3. Step 3: Cross multiply
    151,370.92x = 208,937.10 × 87,737.32
  4. Step 4: Simplify right side
    151,370.92x = 18,331,581,202.57
  5. Step 5: Solve for x
    x = 18,331,581,202.57/151,370.92
  6. Step 6: Final answer
    x = 121,103.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.