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Finding the Fourth Proportional to 124.17, 185.45 and 117.15

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Solution

The fourth proportional to 124.17, 185.45 and 117.15 is: 174.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.17 : 185.45 = 117.15 : x
  2. Step 2: Convert to fraction form
    124.17/185.45 = 117.15/x
  3. Step 3: Cross multiply
    124.17x = 185.45 × 117.15
  4. Step 4: Simplify right side
    124.17x = 21,725.47
  5. Step 5: Solve for x
    x = 21,725.47/124.17
  6. Step 6: Final answer
    x = 174.97

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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.