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Finding the Fourth Proportional to 94.34, 141.66 and 76.12

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Solution

The fourth proportional to 94.34, 141.66 and 76.12 is: 114.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.34 : 141.66 = 76.12 : x
  2. Step 2: Convert to fraction form
    94.34/141.66 = 76.12/x
  3. Step 3: Cross multiply
    94.34x = 141.66 × 76.12
  4. Step 4: Simplify right side
    94.34x = 10,783.16
  5. Step 5: Solve for x
    x = 10,783.16/94.34
  6. Step 6: Final answer
    x = 114.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.