Home / 80,395.08-120,691.02-77,223.92

Finding the Fourth Proportional to 80,395.08, 120,691.02 and 77,223.92

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Solution

The fourth proportional to 80,395.08, 120,691.02 and 77,223.92 is: 115,930.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,395.08 : 120,691.02 = 77,223.92 : x
  2. Step 2: Convert to fraction form
    80,395.08/120,691.02 = 77,223.92/x
  3. Step 3: Cross multiply
    80,395.08x = 120,691.02 × 77,223.92
  4. Step 4: Simplify right side
    80,395.08x = 9,320,233,673.20
  5. Step 5: Solve for x
    x = 9,320,233,673.20/80,395.08
  6. Step 6: Final answer
    x = 115,930.40

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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.