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Finding the Fourth Proportional to 147.81, 220.67 and 124.83

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Solution

The fourth proportional to 147.81, 220.67 and 124.83 is: 186.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.81 : 220.67 = 124.83 : x
  2. Step 2: Convert to fraction form
    147.81/220.67 = 124.83/x
  3. Step 3: Cross multiply
    147.81x = 220.67 × 124.83
  4. Step 4: Simplify right side
    147.81x = 27,546.24
  5. Step 5: Solve for x
    x = 27,546.24/147.81
  6. Step 6: Final answer
    x = 186.36

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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.