Home / 80,753,979.20-120,963,007.20-67,317,051.20

Finding the Fourth Proportional to 80,753,979.20, 120,963,007.20 and 67,317,051.20

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Solution

The fourth proportional to 80,753,979.20, 120,963,007.20 and 67,317,051.20 is: 100,835,562.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,753,979.20 : 120,963,007.20 = 67,317,051.20 : x
  2. Step 2: Convert to fraction form
    80,753,979.20/120,963,007.20 = 67,317,051.20/x
  3. Step 3: Cross multiply
    80,753,979.20x = 120,963,007.20 × 67,317,051.20
  4. Step 4: Simplify right side
    80,753,979.20x = 8,142,872,948,988,369
  5. Step 5: Solve for x
    x = 8,142,872,948,988,369/80,753,979.20
  6. Step 6: Final answer
    x = 100,835,562.90

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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.