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Finding the Fourth Proportional to 134.72, 201.19 and 107.58

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Solution

The fourth proportional to 134.72, 201.19 and 107.58 is: 160.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.72 : 201.19 = 107.58 : x
  2. Step 2: Convert to fraction form
    134.72/201.19 = 107.58/x
  3. Step 3: Cross multiply
    134.72x = 201.19 × 107.58
  4. Step 4: Simplify right side
    134.72x = 21,644.02
  5. Step 5: Solve for x
    x = 21,644.02/134.72
  6. Step 6: Final answer
    x = 160.66

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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.