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Finding the Fourth Proportional to 132.14, 181.80 and 120.48

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Solution

The fourth proportional to 132.14, 181.80 and 120.48 is: 165.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.14 : 181.80 = 120.48 : x
  2. Step 2: Convert to fraction form
    132.14/181.80 = 120.48/x
  3. Step 3: Cross multiply
    132.14x = 181.80 × 120.48
  4. Step 4: Simplify right side
    132.14x = 21,903.26
  5. Step 5: Solve for x
    x = 21,903.26/132.14
  6. Step 6: Final answer
    x = 165.76

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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.