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Finding the Fourth Proportional to 135.30, 186.60 and 91.62

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Solution

The fourth proportional to 135.30, 186.60 and 91.62 is: 126.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.30 : 186.60 = 91.62 : x
  2. Step 2: Convert to fraction form
    135.30/186.60 = 91.62/x
  3. Step 3: Cross multiply
    135.30x = 186.60 × 91.62
  4. Step 4: Simplify right side
    135.30x = 17,096.29
  5. Step 5: Solve for x
    x = 17,096.29/135.30
  6. Step 6: Final answer
    x = 126.36

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.