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Finding the Fourth Proportional to 146.93, 202.90 and 112.20

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Solution

The fourth proportional to 146.93, 202.90 and 112.20 is: 154.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.93 : 202.90 = 112.20 : x
  2. Step 2: Convert to fraction form
    146.93/202.90 = 112.20/x
  3. Step 3: Cross multiply
    146.93x = 202.90 × 112.20
  4. Step 4: Simplify right side
    146.93x = 22,765.38
  5. Step 5: Solve for x
    x = 22,765.38/146.93
  6. Step 6: Final answer
    x = 154.94

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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.