Home / 81,944,171.40-122,916,257.10-78,165,035.40

Finding the Fourth Proportional to 81,944,171.40, 122,916,257.10 and 78,165,035.40

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Solution

The fourth proportional to 81,944,171.40, 122,916,257.10 and 78,165,035.40 is: 117,247,553.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,944,171.40 : 122,916,257.10 = 78,165,035.40 : x
  2. Step 2: Convert to fraction form
    81,944,171.40/122,916,257.10 = 78,165,035.40/x
  3. Step 3: Cross multiply
    81,944,171.40x = 122,916,257.10 × 78,165,035.40
  4. Step 4: Simplify right side
    81,944,171.40x = 9,607,753,587,457,002
  5. Step 5: Solve for x
    x = 9,607,753,587,457,002/81,944,171.40
  6. Step 6: Final answer
    x = 117,247,553.10

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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.