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Finding the Fourth Proportional to 132.80, 181.36 and 131.36

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Solution

The fourth proportional to 132.80, 181.36 and 131.36 is: 179.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.80 : 181.36 = 131.36 : x
  2. Step 2: Convert to fraction form
    132.80/181.36 = 131.36/x
  3. Step 3: Cross multiply
    132.80x = 181.36 × 131.36
  4. Step 4: Simplify right side
    132.80x = 23,823.45
  5. Step 5: Solve for x
    x = 23,823.45/132.80
  6. Step 6: Final answer
    x = 179.39

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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.