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Finding the Fourth Proportional to 171.13, 236.15 and 93.50

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Solution

The fourth proportional to 171.13, 236.15 and 93.50 is: 129.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.13 : 236.15 = 93.50 : x
  2. Step 2: Convert to fraction form
    171.13/236.15 = 93.50/x
  3. Step 3: Cross multiply
    171.13x = 236.15 × 93.50
  4. Step 4: Simplify right side
    171.13x = 22,080.26
  5. Step 5: Solve for x
    x = 22,080.26/171.13
  6. Step 6: Final answer
    x = 129.03

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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.