Home / 81,660,209.70-122,490,314.55-72,732,000.90

Finding the Fourth Proportional to 81,660,209.70, 122,490,314.55 and 72,732,000.90

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Solution

The fourth proportional to 81,660,209.70, 122,490,314.55 and 72,732,000.90 is: 109,098,001.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,660,209.70 : 122,490,314.55 = 72,732,000.90 : x
  2. Step 2: Convert to fraction form
    81,660,209.70/122,490,314.55 = 72,732,000.90/x
  3. Step 3: Cross multiply
    81,660,209.70x = 122,490,314.55 × 72,732,000.90
  4. Step 4: Simplify right side
    81,660,209.70x = 8,908,965,668,091,884
  5. Step 5: Solve for x
    x = 8,908,965,668,091,884/81,660,209.70
  6. Step 6: Final answer
    x = 109,098,001.35

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Similar ratio
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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.