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Finding the Fourth Proportional to 181.87, 250.93 and 111.90

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Solution

The fourth proportional to 181.87, 250.93 and 111.90 is: 154.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.87 : 250.93 = 111.90 : x
  2. Step 2: Convert to fraction form
    181.87/250.93 = 111.90/x
  3. Step 3: Cross multiply
    181.87x = 250.93 × 111.90
  4. Step 4: Simplify right side
    181.87x = 28,079.07
  5. Step 5: Solve for x
    x = 28,079.07/181.87
  6. Step 6: Final answer
    x = 154.39

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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.