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Finding the Fourth Proportional to 142,874.70, 214,039.86 and 88,753.74

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Solution

The fourth proportional to 142,874.70, 214,039.86 and 88,753.74 is: 132,961.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,874.70 : 214,039.86 = 88,753.74 : x
  2. Step 2: Convert to fraction form
    142,874.70/214,039.86 = 88,753.74/x
  3. Step 3: Cross multiply
    142,874.70x = 214,039.86 × 88,753.74
  4. Step 4: Simplify right side
    142,874.70x = 18,996,838,084.08
  5. Step 5: Solve for x
    x = 18,996,838,084.08/142,874.70
  6. Step 6: Final answer
    x = 132,961.53

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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.