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Finding the Fourth Proportional to 113.01, 168.90 and 94.65

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Solution

The fourth proportional to 113.01, 168.90 and 94.65 is: 141.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.01 : 168.90 = 94.65 : x
  2. Step 2: Convert to fraction form
    113.01/168.90 = 94.65/x
  3. Step 3: Cross multiply
    113.01x = 168.90 × 94.65
  4. Step 4: Simplify right side
    113.01x = 15,986.39
  5. Step 5: Solve for x
    x = 15,986.39/113.01
  6. Step 6: Final answer
    x = 141.46

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.