Home / 80,167,129.20-120,321,552.60-68,688,003.60

Finding the Fourth Proportional to 80,167,129.20, 120,321,552.60 and 68,688,003.60

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Solution

The fourth proportional to 80,167,129.20, 120,321,552.60 and 68,688,003.60 is: 103,092,717.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,167,129.20 : 120,321,552.60 = 68,688,003.60 : x
  2. Step 2: Convert to fraction form
    80,167,129.20/120,321,552.60 = 68,688,003.60/x
  3. Step 3: Cross multiply
    80,167,129.20x = 120,321,552.60 × 68,688,003.60
  4. Step 4: Simplify right side
    80,167,129.20x = 8,264,647,238,146,388
  5. Step 5: Solve for x
    x = 8,264,647,238,146,388/80,167,129.20
  6. Step 6: Final answer
    x = 103,092,717.93

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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.