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Finding the Fourth Proportional to 122,609.69, 169,195.97 and 71,627.15

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Solution

The fourth proportional to 122,609.69, 169,195.97 and 71,627.15 is: 98,842.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,609.69 : 169,195.97 = 71,627.15 : x
  2. Step 2: Convert to fraction form
    122,609.69/169,195.97 = 71,627.15/x
  3. Step 3: Cross multiply
    122,609.69x = 169,195.97 × 71,627.15
  4. Step 4: Simplify right side
    122,609.69x = 12,119,023,918.47
  5. Step 5: Solve for x
    x = 12,119,023,918.47/122,609.69
  6. Step 6: Final answer
    x = 98,842.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.