Home / 121,140.20-167,170.50-66,691.92

Finding the Fourth Proportional to 121,140.20, 167,170.50 and 66,691.92

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Solution

The fourth proportional to 121,140.20, 167,170.50 and 66,691.92 is: 92,033.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,140.20 : 167,170.50 = 66,691.92 : x
  2. Step 2: Convert to fraction form
    121,140.20/167,170.50 = 66,691.92/x
  3. Step 3: Cross multiply
    121,140.20x = 167,170.50 × 66,691.92
  4. Step 4: Simplify right side
    121,140.20x = 11,148,921,862.45
  5. Step 5: Solve for x
    x = 11,148,921,862.45/121,140.20
  6. Step 6: Final answer
    x = 92,033.21

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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.