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Finding the Fourth Proportional to 107.08, 159.73 and 94.39

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Solution

The fourth proportional to 107.08, 159.73 and 94.39 is: 140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.08 : 159.73 = 94.39 : x
  2. Step 2: Convert to fraction form
    107.08/159.73 = 94.39/x
  3. Step 3: Cross multiply
    107.08x = 159.73 × 94.39
  4. Step 4: Simplify right side
    107.08x = 15,076.91
  5. Step 5: Solve for x
    x = 15,076.91/107.08
  6. Step 6: Final answer
    x = 140.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.