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Finding the Fourth Proportional to 121,679.55, 167,908.29 and 67,229.41

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Solution

The fourth proportional to 121,679.55, 167,908.29 and 67,229.41 is: 92,771.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,679.55 : 167,908.29 = 67,229.41 : x
  2. Step 2: Convert to fraction form
    121,679.55/167,908.29 = 67,229.41/x
  3. Step 3: Cross multiply
    121,679.55x = 167,908.29 × 67,229.41
  4. Step 4: Simplify right side
    121,679.55x = 11,288,374,583.56
  5. Step 5: Solve for x
    x = 11,288,374,583.56/121,679.55
  6. Step 6: Final answer
    x = 92,771.33

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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.