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Finding the Fourth Proportional to 107.13, 148.62 and 106.11

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Solution

The fourth proportional to 107.13, 148.62 and 106.11 is: 147.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.13 : 148.62 = 106.11 : x
  2. Step 2: Convert to fraction form
    107.13/148.62 = 106.11/x
  3. Step 3: Cross multiply
    107.13x = 148.62 × 106.11
  4. Step 4: Simplify right side
    107.13x = 15,770.07
  5. Step 5: Solve for x
    x = 15,770.07/107.13
  6. Step 6: Final answer
    x = 147.20

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.