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Finding the Fourth Proportional to 161.32, 222.60 and 92.32

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Solution

The fourth proportional to 161.32, 222.60 and 92.32 is: 127.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.32 : 222.60 = 92.32 : x
  2. Step 2: Convert to fraction form
    161.32/222.60 = 92.32/x
  3. Step 3: Cross multiply
    161.32x = 222.60 × 92.32
  4. Step 4: Simplify right side
    161.32x = 20,550.43
  5. Step 5: Solve for x
    x = 20,550.43/161.32
  6. Step 6: Final answer
    x = 127.39

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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.