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Finding the Fourth Proportional to 113.54, 171.06 and 93.69

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Solution

The fourth proportional to 113.54, 171.06 and 93.69 is: 141.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.54 : 171.06 = 93.69 : x
  2. Step 2: Convert to fraction form
    113.54/171.06 = 93.69/x
  3. Step 3: Cross multiply
    113.54x = 171.06 × 93.69
  4. Step 4: Simplify right side
    113.54x = 16,026.61
  5. Step 5: Solve for x
    x = 16,026.61/113.54
  6. Step 6: Final answer
    x = 141.16

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.