Home / 85,212,049.70-127,566,132.15-80,229,188.90

Finding the Fourth Proportional to 85,212,049.70, 127,566,132.15 and 80,229,188.90

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Solution

The fourth proportional to 85,212,049.70, 127,566,132.15 and 80,229,188.90 is: 120,106,573.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,212,049.70 : 127,566,132.15 = 80,229,188.90 : x
  2. Step 2: Convert to fraction form
    85,212,049.70/127,566,132.15 = 80,229,188.90/x
  3. Step 3: Cross multiply
    85,212,049.70x = 127,566,132.15 × 80,229,188.90
  4. Step 4: Simplify right side
    85,212,049.70x = 10,234,527,313,504,714
  5. Step 5: Solve for x
    x = 10,234,527,313,504,714/85,212,049.70
  6. Step 6: Final answer
    x = 120,106,573.54

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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.