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Finding the Fourth Proportional to 161.18, 222.25 and 124.25

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Solution

The fourth proportional to 161.18, 222.25 and 124.25 is: 171.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.18 : 222.25 = 124.25 : x
  2. Step 2: Convert to fraction form
    161.18/222.25 = 124.25/x
  3. Step 3: Cross multiply
    161.18x = 222.25 × 124.25
  4. Step 4: Simplify right side
    161.18x = 27,614.56
  5. Step 5: Solve for x
    x = 27,614.56/161.18
  6. Step 6: Final answer
    x = 171.33

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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.