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Finding the Fourth Proportional to 121,601.25, 167,806.49 and 67,884.75

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Solution

The fourth proportional to 121,601.25, 167,806.49 and 67,884.75 is: 93,679.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,601.25 : 167,806.49 = 67,884.75 : x
  2. Step 2: Convert to fraction form
    121,601.25/167,806.49 = 67,884.75/x
  3. Step 3: Cross multiply
    121,601.25x = 167,806.49 × 67,884.75
  4. Step 4: Simplify right side
    121,601.25x = 11,391,501,282.60
  5. Step 5: Solve for x
    x = 11,391,501,282.60/121,601.25
  6. Step 6: Final answer
    x = 93,679.15

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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.