Home / 121,331.52-167,443.20-71,046.72

Finding the Fourth Proportional to 121,331.52, 167,443.20 and 71,046.72

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Solution

The fourth proportional to 121,331.52, 167,443.20 and 71,046.72 is: 98,047.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,331.52 : 167,443.20 = 71,046.72 : x
  2. Step 2: Convert to fraction form
    121,331.52/167,443.20 = 71,046.72/x
  3. Step 3: Cross multiply
    121,331.52x = 167,443.20 × 71,046.72
  4. Step 4: Simplify right side
    121,331.52x = 11,896,290,146.30
  5. Step 5: Solve for x
    x = 11,896,290,146.30/121,331.52
  6. Step 6: Final answer
    x = 98,047.81

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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.