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Finding the Fourth Proportional to 168.84, 232.78 and 116.29

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Solution

The fourth proportional to 168.84, 232.78 and 116.29 is: 160.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.84 : 232.78 = 116.29 : x
  2. Step 2: Convert to fraction form
    168.84/232.78 = 116.29/x
  3. Step 3: Cross multiply
    168.84x = 232.78 × 116.29
  4. Step 4: Simplify right side
    168.84x = 27,069.11
  5. Step 5: Solve for x
    x = 27,069.11/168.84
  6. Step 6: Final answer
    x = 160.32

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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.