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Finding the Fourth Proportional to 122,609.94, 169,196.32 and 71,627.39

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Solution

The fourth proportional to 122,609.94, 169,196.32 and 71,627.39 is: 98,842.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,609.94 : 169,196.32 = 71,627.39 : x
  2. Step 2: Convert to fraction form
    122,609.94/169,196.32 = 71,627.39/x
  3. Step 3: Cross multiply
    122,609.94x = 169,196.32 × 71,627.39
  4. Step 4: Simplify right side
    122,609.94x = 12,119,090,799.20
  5. Step 5: Solve for x
    x = 12,119,090,799.20/122,609.94
  6. Step 6: Final answer
    x = 98,842.65

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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.