Home / 138,213.86-207,321.95-38,381.83

Finding the Fourth Proportional to 138,213.86, 207,321.95 and 38,381.83

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Solution

The fourth proportional to 138,213.86, 207,321.95 and 38,381.83 is: 57,573.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,213.86 : 207,321.95 = 38,381.83 : x
  2. Step 2: Convert to fraction form
    138,213.86/207,321.95 = 38,381.83/x
  3. Step 3: Cross multiply
    138,213.86x = 207,321.95 × 38,381.83
  4. Step 4: Simplify right side
    138,213.86x = 7,957,394,611.65
  5. Step 5: Solve for x
    x = 7,957,394,611.65/138,213.86
  6. Step 6: Final answer
    x = 57,573.06

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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.