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Finding the Fourth Proportional to 161.52, 223.03 and 112.31

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Solution

The fourth proportional to 161.52, 223.03 and 112.31 is: 155.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.52 : 223.03 = 112.31 : x
  2. Step 2: Convert to fraction form
    161.52/223.03 = 112.31/x
  3. Step 3: Cross multiply
    161.52x = 223.03 × 112.31
  4. Step 4: Simplify right side
    161.52x = 25,048.50
  5. Step 5: Solve for x
    x = 25,048.50/161.52
  6. Step 6: Final answer
    x = 155.08

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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.