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Finding the Fourth Proportional to 168.77, 232.61 and 113.36

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Solution

The fourth proportional to 168.77, 232.61 and 113.36 is: 156.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.77 : 232.61 = 113.36 : x
  2. Step 2: Convert to fraction form
    168.77/232.61 = 113.36/x
  3. Step 3: Cross multiply
    168.77x = 232.61 × 113.36
  4. Step 4: Simplify right side
    168.77x = 26,366.94
  5. Step 5: Solve for x
    x = 26,366.94/168.77
  6. Step 6: Final answer
    x = 156.23

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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.