Home / 156,171.78-215,517.17-84,551.85

Finding the Fourth Proportional to 156,171.78, 215,517.17 and 84,551.85

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Solution

The fourth proportional to 156,171.78, 215,517.17 and 84,551.85 is: 116,681.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,171.78 : 215,517.17 = 84,551.85 : x
  2. Step 2: Convert to fraction form
    156,171.78/215,517.17 = 84,551.85/x
  3. Step 3: Cross multiply
    156,171.78x = 215,517.17 × 84,551.85
  4. Step 4: Simplify right side
    156,171.78x = 18,222,375,641.64
  5. Step 5: Solve for x
    x = 18,222,375,641.64/156,171.78
  6. Step 6: Final answer
    x = 116,681.62

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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.