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Finding the Fourth Proportional to 121,672.57, 167,906.35 and 67,958.33

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Solution

The fourth proportional to 121,672.57, 167,906.35 and 67,958.33 is: 93,781.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,672.57 : 167,906.35 = 67,958.33 : x
  2. Step 2: Convert to fraction form
    121,672.57/167,906.35 = 67,958.33/x
  3. Step 3: Cross multiply
    121,672.57x = 167,906.35 × 67,958.33
  4. Step 4: Simplify right side
    121,672.57x = 11,410,635,142.40
  5. Step 5: Solve for x
    x = 11,410,635,142.40/121,672.57
  6. Step 6: Final answer
    x = 93,781.49

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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.