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Finding the Fourth Proportional to 112.05, 167.20 and 101.25

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Solution

The fourth proportional to 112.05, 167.20 and 101.25 is: 151.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    112.05 : 167.20 = 101.25 : x
  2. Step 2: Convert to fraction form
    112.05/167.20 = 101.25/x
  3. Step 3: Cross multiply
    112.05x = 167.20 × 101.25
  4. Step 4: Simplify right side
    112.05x = 16,928.75
  5. Step 5: Solve for x
    x = 16,928.75/112.05
  6. Step 6: Final answer
    x = 151.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.