Home / 120,721.20-181,254.60-68,233.20

Finding the Fourth Proportional to 120,721.20, 181,254.60 and 68,233.20

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Solution

The fourth proportional to 120,721.20, 181,254.60 and 68,233.20 is: 102,447.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,721.20 : 181,254.60 = 68,233.20 : x
  2. Step 2: Convert to fraction form
    120,721.20/181,254.60 = 68,233.20/x
  3. Step 3: Cross multiply
    120,721.20x = 181,254.60 × 68,233.20
  4. Step 4: Simplify right side
    120,721.20x = 12,367,581,372.72
  5. Step 5: Solve for x
    x = 12,367,581,372.72/120,721.20
  6. Step 6: Final answer
    x = 102,447.47

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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.