Home / 121,436.41-167,581.92-67,721.49

Finding the Fourth Proportional to 121,436.41, 167,581.92 and 67,721.49

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Solution

The fourth proportional to 121,436.41, 167,581.92 and 67,721.49 is: 93,455.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,436.41 : 167,581.92 = 67,721.49 : x
  2. Step 2: Convert to fraction form
    121,436.41/167,581.92 = 67,721.49/x
  3. Step 3: Cross multiply
    121,436.41x = 167,581.92 × 67,721.49
  4. Step 4: Simplify right side
    121,436.41x = 11,348,896,481.55
  5. Step 5: Solve for x
    x = 11,348,896,481.55/121,436.41
  6. Step 6: Final answer
    x = 93,455.47

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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.