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Finding the Fourth Proportional to 131.99, 181.91 and 114.44

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Solution

The fourth proportional to 131.99, 181.91 and 114.44 is: 157.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.99 : 181.91 = 114.44 : x
  2. Step 2: Convert to fraction form
    131.99/181.91 = 114.44/x
  3. Step 3: Cross multiply
    131.99x = 181.91 × 114.44
  4. Step 4: Simplify right side
    131.99x = 20,817.16
  5. Step 5: Solve for x
    x = 20,817.16/131.99
  6. Step 6: Final answer
    x = 157.72

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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.