Home / 80,127.11-120,105.92-30,185.61

Finding the Fourth Proportional to 80,127.11, 120,105.92 and 30,185.61

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Solution

The fourth proportional to 80,127.11, 120,105.92 and 30,185.61 is: 45,246.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,127.11 : 120,105.92 = 30,185.61 : x
  2. Step 2: Convert to fraction form
    80,127.11/120,105.92 = 30,185.61/x
  3. Step 3: Cross multiply
    80,127.11x = 120,105.92 × 30,185.61
  4. Step 4: Simplify right side
    80,127.11x = 3,625,470,308.88
  5. Step 5: Solve for x
    x = 3,625,470,308.88/80,127.11
  6. Step 6: Final answer
    x = 45,246.49

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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.