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Finding the Fourth Proportional to 147.33, 220.67 and 124.42

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Solution

The fourth proportional to 147.33, 220.67 and 124.42 is: 186.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.33 : 220.67 = 124.42 : x
  2. Step 2: Convert to fraction form
    147.33/220.67 = 124.42/x
  3. Step 3: Cross multiply
    147.33x = 220.67 × 124.42
  4. Step 4: Simplify right side
    147.33x = 27,455.64
  5. Step 5: Solve for x
    x = 27,455.64/147.33
  6. Step 6: Final answer
    x = 186.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.