Home / 148,615.13-222,542.10-81,981.20

Finding the Fourth Proportional to 148,615.13, 222,542.10 and 81,981.20

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Solution

The fourth proportional to 148,615.13, 222,542.10 and 81,981.20 is: 122,761.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,615.13 : 222,542.10 = 81,981.20 : x
  2. Step 2: Convert to fraction form
    148,615.13/222,542.10 = 81,981.20/x
  3. Step 3: Cross multiply
    148,615.13x = 222,542.10 × 81,981.20
  4. Step 4: Simplify right side
    148,615.13x = 18,244,268,408.52
  5. Step 5: Solve for x
    x = 18,244,268,408.52/148,615.13
  6. Step 6: Final answer
    x = 122,761.85

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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.