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Finding the Fourth Proportional to 166.99, 230.01 and 117.78

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Solution

The fourth proportional to 166.99, 230.01 and 117.78 is: 162.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.99 : 230.01 = 117.78 : x
  2. Step 2: Convert to fraction form
    166.99/230.01 = 117.78/x
  3. Step 3: Cross multiply
    166.99x = 230.01 × 117.78
  4. Step 4: Simplify right side
    166.99x = 27,090.58
  5. Step 5: Solve for x
    x = 27,090.58/166.99
  6. Step 6: Final answer
    x = 162.23

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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.