Home / 80,832,375.20-121,248,562.80-71,904,166.40

Finding the Fourth Proportional to 80,832,375.20, 121,248,562.80 and 71,904,166.40

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Solution

The fourth proportional to 80,832,375.20, 121,248,562.80 and 71,904,166.40 is: 107,856,249.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,832,375.20 : 121,248,562.80 = 71,904,166.40 : x
  2. Step 2: Convert to fraction form
    80,832,375.20/121,248,562.80 = 71,904,166.40/x
  3. Step 3: Cross multiply
    80,832,375.20x = 121,248,562.80 × 71,904,166.40
  4. Step 4: Simplify right side
    80,832,375.20x = 8,718,276,835,332,050
  5. Step 5: Solve for x
    x = 8,718,276,835,332,050/80,832,375.20
  6. Step 6: Final answer
    x = 107,856,249.60

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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.