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Finding the Fourth Proportional to 161.56, 222.96 and 96.12

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Solution

The fourth proportional to 161.56, 222.96 and 96.12 is: 132.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.56 : 222.96 = 96.12 : x
  2. Step 2: Convert to fraction form
    161.56/222.96 = 96.12/x
  3. Step 3: Cross multiply
    161.56x = 222.96 × 96.12
  4. Step 4: Simplify right side
    161.56x = 21,430.92
  5. Step 5: Solve for x
    x = 21,430.92/161.56
  6. Step 6: Final answer
    x = 132.65

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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.