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Finding the Fourth Proportional to 115.32, 159.18 and 101.52

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Solution

The fourth proportional to 115.32, 159.18 and 101.52 is: 140.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.32 : 159.18 = 101.52 : x
  2. Step 2: Convert to fraction form
    115.32/159.18 = 101.52/x
  3. Step 3: Cross multiply
    115.32x = 159.18 × 101.52
  4. Step 4: Simplify right side
    115.32x = 16,159.95
  5. Step 5: Solve for x
    x = 16,159.95/115.32
  6. Step 6: Final answer
    x = 140.13

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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.