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Finding the Fourth Proportional to 113.02, 168.09 and 110.71

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Solution

The fourth proportional to 113.02, 168.09 and 110.71 is: 164.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.02 : 168.09 = 110.71 : x
  2. Step 2: Convert to fraction form
    113.02/168.09 = 110.71/x
  3. Step 3: Cross multiply
    113.02x = 168.09 × 110.71
  4. Step 4: Simplify right side
    113.02x = 18,609.24
  5. Step 5: Solve for x
    x = 18,609.24/113.02
  6. Step 6: Final answer
    x = 164.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.