Home / 81,454,372.20-122,181,558.30-72,526,163.40

Finding the Fourth Proportional to 81,454,372.20, 122,181,558.30 and 72,526,163.40

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Solution

The fourth proportional to 81,454,372.20, 122,181,558.30 and 72,526,163.40 is: 108,789,245.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,454,372.20 : 122,181,558.30 = 72,526,163.40 : x
  2. Step 2: Convert to fraction form
    81,454,372.20/122,181,558.30 = 72,526,163.40/x
  3. Step 3: Cross multiply
    81,454,372.20x = 122,181,558.30 × 72,526,163.40
  4. Step 4: Simplify right side
    81,454,372.20x = 8,861,359,661,732,427
  5. Step 5: Solve for x
    x = 8,861,359,661,732,427/81,454,372.20
  6. Step 6: Final answer
    x = 108,789,245.10

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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.