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Finding the Fourth Proportional to 166.66, 229.98 and 100.26

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Solution

The fourth proportional to 166.66, 229.98 and 100.26 is: 138.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.66 : 229.98 = 100.26 : x
  2. Step 2: Convert to fraction form
    166.66/229.98 = 100.26/x
  3. Step 3: Cross multiply
    166.66x = 229.98 × 100.26
  4. Step 4: Simplify right side
    166.66x = 23,057.87
  5. Step 5: Solve for x
    x = 23,057.87/166.66
  6. Step 6: Final answer
    x = 138.35

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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.