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Finding the Fourth Proportional to 99.30, 136.22 and 95.10

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Solution

The fourth proportional to 99.30, 136.22 and 95.10 is: 130.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.30 : 136.22 = 95.10 : x
  2. Step 2: Convert to fraction form
    99.30/136.22 = 95.10/x
  3. Step 3: Cross multiply
    99.30x = 136.22 × 95.10
  4. Step 4: Simplify right side
    99.30x = 12,954.05
  5. Step 5: Solve for x
    x = 12,954.05/99.30
  6. Step 6: Final answer
    x = 130.45

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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.