Home / 80,008,234.80-120,012,352.20-76,649,002.80

Finding the Fourth Proportional to 80,008,234.80, 120,012,352.20 and 76,649,002.80

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Solution

The fourth proportional to 80,008,234.80, 120,012,352.20 and 76,649,002.80 is: 114,973,504.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,008,234.80 : 120,012,352.20 = 76,649,002.80 : x
  2. Step 2: Convert to fraction form
    80,008,234.80/120,012,352.20 = 76,649,002.80/x
  3. Step 3: Cross multiply
    80,008,234.80x = 120,012,352.20 × 76,649,002.80
  4. Step 4: Simplify right side
    80,008,234.80x = 9,198,827,119,812,386
  5. Step 5: Solve for x
    x = 9,198,827,119,812,386/80,008,234.80
  6. Step 6: Final answer
    x = 114,973,504.20

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1.5x scale

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.