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Finding the Fourth Proportional to 121,704, 167,951.52 and 68,712

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Solution

The fourth proportional to 121,704, 167,951.52 and 68,712 is: 94,822.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,704 : 167,951.52 = 68,712 : x
  2. Step 2: Convert to fraction form
    121,704/167,951.52 = 68,712/x
  3. Step 3: Cross multiply
    121,704x = 167,951.52 × 68,712
  4. Step 4: Simplify right side
    121,704x = 11,540,284,842.24
  5. Step 5: Solve for x
    x = 11,540,284,842.24/121,704
  6. Step 6: Final answer
    x = 94,822.56

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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.