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Finding the Fourth Proportional to 107.84, 147.88 and 103.52

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Solution

The fourth proportional to 107.84, 147.88 and 103.52 is: 141.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.84 : 147.88 = 103.52 : x
  2. Step 2: Convert to fraction form
    107.84/147.88 = 103.52/x
  3. Step 3: Cross multiply
    107.84x = 147.88 × 103.52
  4. Step 4: Simplify right side
    107.84x = 15,308.54
  5. Step 5: Solve for x
    x = 15,308.54/107.84
  6. Step 6: Final answer
    x = 141.96

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.