Home / 138,142.32-207,213.50-38,302.52

Finding the Fourth Proportional to 138,142.32, 207,213.50 and 38,302.52

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Solution

The fourth proportional to 138,142.32, 207,213.50 and 38,302.52 is: 57,453.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,142.32 : 207,213.50 = 38,302.52 : x
  2. Step 2: Convert to fraction form
    138,142.32/207,213.50 = 38,302.52/x
  3. Step 3: Cross multiply
    138,142.32x = 207,213.50 × 38,302.52
  4. Step 4: Simplify right side
    138,142.32x = 7,936,799,228.02
  5. Step 5: Solve for x
    x = 7,936,799,228.02/138,142.32
  6. Step 6: Final answer
    x = 57,453.79

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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.