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Finding the Fourth Proportional to 121,761.92, 167,922.63 and 76,444.11

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Solution

The fourth proportional to 121,761.92, 167,922.63 and 76,444.11 is: 105,424.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,761.92 : 167,922.63 = 76,444.11 : x
  2. Step 2: Convert to fraction form
    121,761.92/167,922.63 = 76,444.11/x
  3. Step 3: Cross multiply
    121,761.92x = 167,922.63 × 76,444.11
  4. Step 4: Simplify right side
    121,761.92x = 12,836,695,999.21
  5. Step 5: Solve for x
    x = 12,836,695,999.21/121,761.92
  6. Step 6: Final answer
    x = 105,424.56

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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.