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Finding the Fourth Proportional to 170.66, 235.40 and 124.14

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Solution

The fourth proportional to 170.66, 235.40 and 124.14 is: 171.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.66 : 235.40 = 124.14 : x
  2. Step 2: Convert to fraction form
    170.66/235.40 = 124.14/x
  3. Step 3: Cross multiply
    170.66x = 235.40 × 124.14
  4. Step 4: Simplify right side
    170.66x = 29,222.56
  5. Step 5: Solve for x
    x = 29,222.56/170.66
  6. Step 6: Final answer
    x = 171.23

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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.