Home / 80,414,234.80-120,621,352.20-67,021,921.60

Finding the Fourth Proportional to 80,414,234.80, 120,621,352.20 and 67,021,921.60

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Solution

The fourth proportional to 80,414,234.80, 120,621,352.20 and 67,021,921.60 is: 100,532,882.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,414,234.80 : 120,621,352.20 = 67,021,921.60 : x
  2. Step 2: Convert to fraction form
    80,414,234.80/120,621,352.20 = 67,021,921.60/x
  3. Step 3: Cross multiply
    80,414,234.80x = 120,621,352.20 × 67,021,921.60
  4. Step 4: Simplify right side
    80,414,234.80x = 8,084,274,810,434,388
  5. Step 5: Solve for x
    x = 8,084,274,810,434,388/80,414,234.80
  6. Step 6: Final answer
    x = 100,532,882.40

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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.