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Finding the Fourth Proportional to 118.01, 161.97 and 113.00

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Solution

The fourth proportional to 118.01, 161.97 and 113.00 is: 155.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.01 : 161.97 = 113.00 : x
  2. Step 2: Convert to fraction form
    118.01/161.97 = 113.00/x
  3. Step 3: Cross multiply
    118.01x = 161.97 × 113.00
  4. Step 4: Simplify right side
    118.01x = 18,301.80
  5. Step 5: Solve for x
    x = 18,301.80/118.01
  6. Step 6: Final answer
    x = 155.09

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.