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Finding the Fourth Proportional to 121,753.84, 182,379.17 and 71,679.64

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Solution

The fourth proportional to 121,753.84, 182,379.17 and 71,679.64 is: 107,371.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,753.84 : 182,379.17 = 71,679.64 : x
  2. Step 2: Convert to fraction form
    121,753.84/182,379.17 = 71,679.64/x
  3. Step 3: Cross multiply
    121,753.84x = 182,379.17 × 71,679.64
  4. Step 4: Simplify right side
    121,753.84x = 13,072,873,249.10
  5. Step 5: Solve for x
    x = 13,072,873,249.10/121,753.84
  6. Step 6: Final answer
    x = 107,371.34

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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.