Home / 138,170.75-207,256.18-49,418.95

Finding the Fourth Proportional to 138,170.75, 207,256.18 and 49,418.95

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Solution

The fourth proportional to 138,170.75, 207,256.18 and 49,418.95 is: 74,128.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,170.75 : 207,256.18 = 49,418.95 : x
  2. Step 2: Convert to fraction form
    138,170.75/207,256.18 = 49,418.95/x
  3. Step 3: Cross multiply
    138,170.75x = 207,256.18 × 49,418.95
  4. Step 4: Simplify right side
    138,170.75x = 10,242,382,796.61
  5. Step 5: Solve for x
    x = 10,242,382,796.61/138,170.75
  6. Step 6: Final answer
    x = 74,128.44

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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.