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Finding the Fourth Proportional to 95.12, 130.90 and 88.23

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Solution

The fourth proportional to 95.12, 130.90 and 88.23 is: 121.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.12 : 130.90 = 88.23 : x
  2. Step 2: Convert to fraction form
    95.12/130.90 = 88.23/x
  3. Step 3: Cross multiply
    95.12x = 130.90 × 88.23
  4. Step 4: Simplify right side
    95.12x = 11,548.87
  5. Step 5: Solve for x
    x = 11,548.87/95.12
  6. Step 6: Final answer
    x = 121.42

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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.