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Finding the Fourth Proportional to 121,910.90, 182,805.87 and 38,794.10

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Solution

The fourth proportional to 121,910.90, 182,805.87 and 38,794.10 is: 58,171.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,910.90 : 182,805.87 = 38,794.10 : x
  2. Step 2: Convert to fraction form
    121,910.90/182,805.87 = 38,794.10/x
  3. Step 3: Cross multiply
    121,910.90x = 182,805.87 × 38,794.10
  4. Step 4: Simplify right side
    121,910.90x = 7,091,789,201.37
  5. Step 5: Solve for x
    x = 7,091,789,201.37/121,910.90
  6. Step 6: Final answer
    x = 58,171.90

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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.