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Finding the Fourth Proportional to 107.04, 148.74 and 105.75

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Solution

The fourth proportional to 107.04, 148.74 and 105.75 is: 146.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.04 : 148.74 = 105.75 : x
  2. Step 2: Convert to fraction form
    107.04/148.74 = 105.75/x
  3. Step 3: Cross multiply
    107.04x = 148.74 × 105.75
  4. Step 4: Simplify right side
    107.04x = 15,729.26
  5. Step 5: Solve for x
    x = 15,729.26/107.04
  6. Step 6: Final answer
    x = 146.95

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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.