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Finding the Fourth Proportional to 167,581.80, 251,372.70 and 138,057.30

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Solution

The fourth proportional to 167,581.80, 251,372.70 and 138,057.30 is: 207,085.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,581.80 : 251,372.70 = 138,057.30 : x
  2. Step 2: Convert to fraction form
    167,581.80/251,372.70 = 138,057.30/x
  3. Step 3: Cross multiply
    167,581.80x = 251,372.70 × 138,057.30
  4. Step 4: Simplify right side
    167,581.80x = 34,703,836,255.71
  5. Step 5: Solve for x
    x = 34,703,836,255.71/167,581.80
  6. Step 6: Final answer
    x = 207,085.95

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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.