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Finding the Fourth Proportional to 166.47, 229.59 and 117.36

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Solution

The fourth proportional to 166.47, 229.59 and 117.36 is: 161.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.47 : 229.59 = 117.36 : x
  2. Step 2: Convert to fraction form
    166.47/229.59 = 117.36/x
  3. Step 3: Cross multiply
    166.47x = 229.59 × 117.36
  4. Step 4: Simplify right side
    166.47x = 26,944.68
  5. Step 5: Solve for x
    x = 26,944.68/166.47
  6. Step 6: Final answer
    x = 161.86

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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.