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Finding the Fourth Proportional to 119.94, 165.54 and 113.88

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Solution

The fourth proportional to 119.94, 165.54 and 113.88 is: 157.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.94 : 165.54 = 113.88 : x
  2. Step 2: Convert to fraction form
    119.94/165.54 = 113.88/x
  3. Step 3: Cross multiply
    119.94x = 165.54 × 113.88
  4. Step 4: Simplify right side
    119.94x = 18,851.70
  5. Step 5: Solve for x
    x = 18,851.70/119.94
  6. Step 6: Final answer
    x = 157.18

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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.