Home / 138,213.36-207,321.20-38,381.33

Finding the Fourth Proportional to 138,213.36, 207,321.20 and 38,381.33

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Solution

The fourth proportional to 138,213.36, 207,321.20 and 38,381.33 is: 57,572.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,213.36 : 207,321.20 = 38,381.33 : x
  2. Step 2: Convert to fraction form
    138,213.36/207,321.20 = 38,381.33/x
  3. Step 3: Cross multiply
    138,213.36x = 207,321.20 × 38,381.33
  4. Step 4: Simplify right side
    138,213.36x = 7,957,262,164.68
  5. Step 5: Solve for x
    x = 7,957,262,164.68/138,213.36
  6. Step 6: Final answer
    x = 57,572.31

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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.