Home / 81,715,260.60-122,572,890.90-67,102,601.40

Finding the Fourth Proportional to 81,715,260.60, 122,572,890.90 and 67,102,601.40

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Solution

The fourth proportional to 81,715,260.60, 122,572,890.90 and 67,102,601.40 is: 100,653,902.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,715,260.60 : 122,572,890.90 = 67,102,601.40 : x
  2. Step 2: Convert to fraction form
    81,715,260.60/122,572,890.90 = 67,102,601.40/x
  3. Step 3: Cross multiply
    81,715,260.60x = 122,572,890.90 × 67,102,601.40
  4. Step 4: Simplify right side
    81,715,260.60x = 8,224,959,840,508,387
  5. Step 5: Solve for x
    x = 8,224,959,840,508,387/81,715,260.60
  6. Step 6: Final answer
    x = 100,653,902.10

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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.