Home / 138,219.48-207,328.14-38,381.04

Finding the Fourth Proportional to 138,219.48, 207,328.14 and 38,381.04

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Solution

The fourth proportional to 138,219.48, 207,328.14 and 38,381.04 is: 57,571.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,219.48 : 207,328.14 = 38,381.04 : x
  2. Step 2: Convert to fraction form
    138,219.48/207,328.14 = 38,381.04/x
  3. Step 3: Cross multiply
    138,219.48x = 207,328.14 × 38,381.04
  4. Step 4: Simplify right side
    138,219.48x = 7,957,469,634.47
  5. Step 5: Solve for x
    x = 7,957,469,634.47/138,219.48
  6. Step 6: Final answer
    x = 57,571.26

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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.