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Finding the Fourth Proportional to 132.02, 181.74 and 115.62

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Solution

The fourth proportional to 132.02, 181.74 and 115.62 is: 159.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.02 : 181.74 = 115.62 : x
  2. Step 2: Convert to fraction form
    132.02/181.74 = 115.62/x
  3. Step 3: Cross multiply
    132.02x = 181.74 × 115.62
  4. Step 4: Simplify right side
    132.02x = 21,012.78
  5. Step 5: Solve for x
    x = 21,012.78/132.02
  6. Step 6: Final answer
    x = 159.16

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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.