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Finding the Fourth Proportional to 115.10, 158.66 and 93.24

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Solution

The fourth proportional to 115.10, 158.66 and 93.24 is: 128.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.10 : 158.66 = 93.24 : x
  2. Step 2: Convert to fraction form
    115.10/158.66 = 93.24/x
  3. Step 3: Cross multiply
    115.10x = 158.66 × 93.24
  4. Step 4: Simplify right side
    115.10x = 14,793.46
  5. Step 5: Solve for x
    x = 14,793.46/115.10
  6. Step 6: Final answer
    x = 128.53

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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.