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Finding the Fourth Proportional to 121,609.74, 167,819.78 and 67,160.72

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Solution

The fourth proportional to 121,609.74, 167,819.78 and 67,160.72 is: 92,680.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,609.74 : 167,819.78 = 67,160.72 : x
  2. Step 2: Convert to fraction form
    121,609.74/167,819.78 = 67,160.72/x
  3. Step 3: Cross multiply
    121,609.74x = 167,819.78 × 67,160.72
  4. Step 4: Simplify right side
    121,609.74x = 11,270,897,255.04
  5. Step 5: Solve for x
    x = 11,270,897,255.04/121,609.74
  6. Step 6: Final answer
    x = 92,680.88

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1.5x scale

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.