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Finding the Fourth Proportional to 107.41, 148.11 and 74.59

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Solution

The fourth proportional to 107.41, 148.11 and 74.59 is: 102.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.41 : 148.11 = 74.59 : x
  2. Step 2: Convert to fraction form
    107.41/148.11 = 74.59/x
  3. Step 3: Cross multiply
    107.41x = 148.11 × 74.59
  4. Step 4: Simplify right side
    107.41x = 11,047.52
  5. Step 5: Solve for x
    x = 11,047.52/107.41
  6. Step 6: Final answer
    x = 102.85

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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.