Home / 80,687,228.40-120,401,518.86-71,991,560.88

Finding the Fourth Proportional to 80,687,228.40, 120,401,518.86 and 71,991,560.88

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Solution

The fourth proportional to 80,687,228.40, 120,401,518.86 and 71,991,560.88 is: 107,425,839.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,687,228.40 : 120,401,518.86 = 71,991,560.88 : x
  2. Step 2: Convert to fraction form
    80,687,228.40/120,401,518.86 = 71,991,560.88/x
  3. Step 3: Cross multiply
    80,687,228.40x = 120,401,518.86 × 71,991,560.88
  4. Step 4: Simplify right side
    80,687,228.40x = 8,667,893,275,054,158
  5. Step 5: Solve for x
    x = 8,667,893,275,054,158/80,687,228.40
  6. Step 6: Final answer
    x = 107,425,839.84

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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.