Home / 121,389.72-167,517.92-67,673.66

Finding the Fourth Proportional to 121,389.72, 167,517.92 and 67,673.66

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Solution

The fourth proportional to 121,389.72, 167,517.92 and 67,673.66 is: 93,389.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,389.72 : 167,517.92 = 67,673.66 : x
  2. Step 2: Convert to fraction form
    121,389.72/167,517.92 = 67,673.66/x
  3. Step 3: Cross multiply
    121,389.72x = 167,517.92 × 67,673.66
  4. Step 4: Simplify right side
    121,389.72x = 11,336,550,761.99
  5. Step 5: Solve for x
    x = 11,336,550,761.99/121,389.72
  6. Step 6: Final answer
    x = 93,389.71

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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.