Home / 80,687,218.40-120,401,504-71,991,550.88

Finding the Fourth Proportional to 80,687,218.40, 120,401,504 and 71,991,550.88

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Solution

The fourth proportional to 80,687,218.40, 120,401,504 and 71,991,550.88 is: 107,425,824.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,687,218.40 : 120,401,504 = 71,991,550.88 : x
  2. Step 2: Convert to fraction form
    80,687,218.40/120,401,504 = 71,991,550.88/x
  3. Step 3: Cross multiply
    80,687,218.40x = 120,401,504 × 71,991,550.88
  4. Step 4: Simplify right side
    80,687,218.40x = 8,667,891,001,244,523
  5. Step 5: Solve for x
    x = 8,667,891,001,244,523/80,687,218.40
  6. Step 6: Final answer
    x = 107,425,824.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.