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Finding the Fourth Proportional to 136.61, 188.43 and 95.18

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Solution

The fourth proportional to 136.61, 188.43 and 95.18 is: 131.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.61 : 188.43 = 95.18 : x
  2. Step 2: Convert to fraction form
    136.61/188.43 = 95.18/x
  3. Step 3: Cross multiply
    136.61x = 188.43 × 95.18
  4. Step 4: Simplify right side
    136.61x = 17,933.47
  5. Step 5: Solve for x
    x = 17,933.47/136.61
  6. Step 6: Final answer
    x = 131.27

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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.