Home / 121,129.27-167,156.72-67,414.29

Finding the Fourth Proportional to 121,129.27, 167,156.72 and 67,414.29

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Solution

The fourth proportional to 121,129.27, 167,156.72 and 67,414.29 is: 93,030.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,129.27 : 167,156.72 = 67,414.29 : x
  2. Step 2: Convert to fraction form
    121,129.27/167,156.72 = 67,414.29/x
  3. Step 3: Cross multiply
    121,129.27x = 167,156.72 × 67,414.29
  4. Step 4: Simplify right side
    121,129.27x = 11,268,751,260.46
  5. Step 5: Solve for x
    x = 11,268,751,260.46/121,129.27
  6. Step 6: Final answer
    x = 93,030.79

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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.