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Finding the Fourth Proportional to 106.23, 144.57 and 105.81

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Solution

The fourth proportional to 106.23, 144.57 and 105.81 is: 144.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    106.23 : 144.57 = 105.81 : x
  2. Step 2: Convert to fraction form
    106.23/144.57 = 105.81/x
  3. Step 3: Cross multiply
    106.23x = 144.57 × 105.81
  4. Step 4: Simplify right side
    106.23x = 15,296.95
  5. Step 5: Solve for x
    x = 15,296.95/106.23
  6. Step 6: Final answer
    x = 144.00

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.