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Finding the Fourth Proportional to 169,728.49, 254,204.92 and 81,044.11

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Solution

The fourth proportional to 169,728.49, 254,204.92 and 81,044.11 is: 121,380.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,728.49 : 254,204.92 = 81,044.11 : x
  2. Step 2: Convert to fraction form
    169,728.49/254,204.92 = 81,044.11/x
  3. Step 3: Cross multiply
    169,728.49x = 254,204.92 × 81,044.11
  4. Step 4: Simplify right side
    169,728.49x = 20,601,811,093.80
  5. Step 5: Solve for x
    x = 20,601,811,093.80/169,728.49
  6. Step 6: Final answer
    x = 121,380.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.