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Finding the Fourth Proportional to 105.24, 144.27 and 103.56

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Solution

The fourth proportional to 105.24, 144.27 and 103.56 is: 141.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    105.24 : 144.27 = 103.56 : x
  2. Step 2: Convert to fraction form
    105.24/144.27 = 103.56/x
  3. Step 3: Cross multiply
    105.24x = 144.27 × 103.56
  4. Step 4: Simplify right side
    105.24x = 14,940.60
  5. Step 5: Solve for x
    x = 14,940.60/105.24
  6. Step 6: Final answer
    x = 141.97

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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.