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Finding the Fourth Proportional to 121,691.12, 167,933.03 and 67,975.97

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Solution

The fourth proportional to 121,691.12, 167,933.03 and 67,975.97 is: 93,806.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,691.12 : 167,933.03 = 67,975.97 : x
  2. Step 2: Convert to fraction form
    121,691.12/167,933.03 = 67,975.97/x
  3. Step 3: Cross multiply
    121,691.12x = 167,933.03 × 67,975.97
  4. Step 4: Simplify right side
    121,691.12x = 11,415,410,609.29
  5. Step 5: Solve for x
    x = 11,415,410,609.29/121,691.12
  6. Step 6: Final answer
    x = 93,806.44

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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.