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Finding the Fourth Proportional to 147.26, 203.03 and 107.88

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Solution

The fourth proportional to 147.26, 203.03 and 107.88 is: 148.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.26 : 203.03 = 107.88 : x
  2. Step 2: Convert to fraction form
    147.26/203.03 = 107.88/x
  3. Step 3: Cross multiply
    147.26x = 203.03 × 107.88
  4. Step 4: Simplify right side
    147.26x = 21,902.88
  5. Step 5: Solve for x
    x = 21,902.88/147.26
  6. Step 6: Final answer
    x = 148.74

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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.