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Finding the Fourth Proportional to 99.81, 136.77 and 95.56

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Solution

The fourth proportional to 99.81, 136.77 and 95.56 is: 130.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.81 : 136.77 = 95.56 : x
  2. Step 2: Convert to fraction form
    99.81/136.77 = 95.56/x
  3. Step 3: Cross multiply
    99.81x = 136.77 × 95.56
  4. Step 4: Simplify right side
    99.81x = 13,069.74
  5. Step 5: Solve for x
    x = 13,069.74/99.81
  6. Step 6: Final answer
    x = 130.95

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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.