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Finding the Fourth Proportional to 80,744.29, 121,874.89 and 80,744.29

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Solution

The fourth proportional to 80,744.29, 121,874.89 and 80,744.29 is: 121,874.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,744.29 : 121,874.89 = 80,744.29 : x
  2. Step 2: Convert to fraction form
    80,744.29/121,874.89 = 80,744.29/x
  3. Step 3: Cross multiply
    80,744.29x = 121,874.89 × 80,744.29
  4. Step 4: Simplify right side
    80,744.29x = 9,840,701,461.88
  5. Step 5: Solve for x
    x = 9,840,701,461.88/80,744.29
  6. Step 6: Final answer
    x = 121,874.89

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.