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Finding the Fourth Proportional to 171.83, 236.93 and 109.67

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Solution

The fourth proportional to 171.83, 236.93 and 109.67 is: 151.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.83 : 236.93 = 109.67 : x
  2. Step 2: Convert to fraction form
    171.83/236.93 = 109.67/x
  3. Step 3: Cross multiply
    171.83x = 236.93 × 109.67
  4. Step 4: Simplify right side
    171.83x = 25,982.38
  5. Step 5: Solve for x
    x = 25,982.38/171.83
  6. Step 6: Final answer
    x = 151.21

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Why These Related Problems?

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