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Finding the Fourth Proportional to 99.56, 136.08 and 95.31

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Solution

The fourth proportional to 99.56, 136.08 and 95.31 is: 130.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.56 : 136.08 = 95.31 : x
  2. Step 2: Convert to fraction form
    99.56/136.08 = 95.31/x
  3. Step 3: Cross multiply
    99.56x = 136.08 × 95.31
  4. Step 4: Simplify right side
    99.56x = 12,969.78
  5. Step 5: Solve for x
    x = 12,969.78/99.56
  6. Step 6: Final answer
    x = 130.27

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.