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Finding the Fourth Proportional to 132.12, 181.51 and 107.48

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Solution

The fourth proportional to 132.12, 181.51 and 107.48 is: 147.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.12 : 181.51 = 107.48 : x
  2. Step 2: Convert to fraction form
    132.12/181.51 = 107.48/x
  3. Step 3: Cross multiply
    132.12x = 181.51 × 107.48
  4. Step 4: Simplify right side
    132.12x = 19,508.69
  5. Step 5: Solve for x
    x = 19,508.69/132.12
  6. Step 6: Final answer
    x = 147.66

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.