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Finding the Fourth Proportional to 161.25, 222.43 and 95.75

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Solution

The fourth proportional to 161.25, 222.43 and 95.75 is: 132.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.25 : 222.43 = 95.75 : x
  2. Step 2: Convert to fraction form
    161.25/222.43 = 95.75/x
  3. Step 3: Cross multiply
    161.25x = 222.43 × 95.75
  4. Step 4: Simplify right side
    161.25x = 21,297.67
  5. Step 5: Solve for x
    x = 21,297.67/161.25
  6. Step 6: Final answer
    x = 132.08

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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.