Home / 86,508,002.20-129,762,003.30-80,797,307.80

Finding the Fourth Proportional to 86,508,002.20, 129,762,003.30 and 80,797,307.80

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Solution

The fourth proportional to 86,508,002.20, 129,762,003.30 and 80,797,307.80 is: 121,195,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,508,002.20 : 129,762,003.30 = 80,797,307.80 : x
  2. Step 2: Convert to fraction form
    86,508,002.20/129,762,003.30 = 80,797,307.80/x
  3. Step 3: Cross multiply
    86,508,002.20x = 129,762,003.30 × 80,797,307.80
  4. Step 4: Simplify right side
    86,508,002.20x = 10,484,420,521,374,716
  5. Step 5: Solve for x
    x = 10,484,420,521,374,716/86,508,002.20
  6. Step 6: Final answer
    x = 121,195,961.70

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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.