Home / 129,215.20-193,822.80-40,495.90

Finding the Fourth Proportional to 129,215.20, 193,822.80 and 40,495.90

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Solution

The fourth proportional to 129,215.20, 193,822.80 and 40,495.90 is: 60,743.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,215.20 : 193,822.80 = 40,495.90 : x
  2. Step 2: Convert to fraction form
    129,215.20/193,822.80 = 40,495.90/x
  3. Step 3: Cross multiply
    129,215.20x = 193,822.80 × 40,495.90
  4. Step 4: Simplify right side
    129,215.20x = 7,849,028,726.52
  5. Step 5: Solve for x
    x = 7,849,028,726.52/129,215.20
  6. Step 6: Final answer
    x = 60,743.85

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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.