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Finding the Fourth Proportional to 166.87, 230.30 and 101.37

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Solution

The fourth proportional to 166.87, 230.30 and 101.37 is: 139.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.87 : 230.30 = 101.37 : x
  2. Step 2: Convert to fraction form
    166.87/230.30 = 101.37/x
  3. Step 3: Cross multiply
    166.87x = 230.30 × 101.37
  4. Step 4: Simplify right side
    166.87x = 23,345.51
  5. Step 5: Solve for x
    x = 23,345.51/166.87
  6. Step 6: Final answer
    x = 139.90

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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.