Home / 138,418.43-207,627.72-38,581.21

Finding the Fourth Proportional to 138,418.43, 207,627.72 and 38,581.21

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Solution

The fourth proportional to 138,418.43, 207,627.72 and 38,581.21 is: 57,871.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,418.43 : 207,627.72 = 38,581.21 : x
  2. Step 2: Convert to fraction form
    138,418.43/207,627.72 = 38,581.21/x
  3. Step 3: Cross multiply
    138,418.43x = 207,627.72 × 38,581.21
  4. Step 4: Simplify right side
    138,418.43x = 8,010,528,003.39
  5. Step 5: Solve for x
    x = 8,010,528,003.39/138,418.43
  6. Step 6: Final answer
    x = 57,871.83

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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.