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Finding the Fourth Proportional to 135.37, 186.60 and 88.66

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Solution

The fourth proportional to 135.37, 186.60 and 88.66 is: 122.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.37 : 186.60 = 88.66 : x
  2. Step 2: Convert to fraction form
    135.37/186.60 = 88.66/x
  3. Step 3: Cross multiply
    135.37x = 186.60 × 88.66
  4. Step 4: Simplify right side
    135.37x = 16,543.96
  5. Step 5: Solve for x
    x = 16,543.96/135.37
  6. Step 6: Final answer
    x = 122.21

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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.