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Finding the Fourth Proportional to 155,336.54, 214,372.17 and 87,374.90

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Solution

The fourth proportional to 155,336.54, 214,372.17 and 87,374.90 is: 120,581.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,336.54 : 214,372.17 = 87,374.90 : x
  2. Step 2: Convert to fraction form
    155,336.54/214,372.17 = 87,374.90/x
  3. Step 3: Cross multiply
    155,336.54x = 214,372.17 × 87,374.90
  4. Step 4: Simplify right side
    155,336.54x = 18,730,747,452.46
  5. Step 5: Solve for x
    x = 18,730,747,452.46/155,336.54
  6. Step 6: Final answer
    x = 120,581.73

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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.