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Finding the Fourth Proportional to 135.06, 186.17 and 93.55

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Solution

The fourth proportional to 135.06, 186.17 and 93.55 is: 128.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.06 : 186.17 = 93.55 : x
  2. Step 2: Convert to fraction form
    135.06/186.17 = 93.55/x
  3. Step 3: Cross multiply
    135.06x = 186.17 × 93.55
  4. Step 4: Simplify right side
    135.06x = 17,415.74
  5. Step 5: Solve for x
    x = 17,415.74/135.06
  6. Step 6: Final answer
    x = 128.95

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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.