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Finding the Fourth Proportional to 110.19, 151.13 and 104.31

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Solution

The fourth proportional to 110.19, 151.13 and 104.31 is: 143.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.19 : 151.13 = 104.31 : x
  2. Step 2: Convert to fraction form
    110.19/151.13 = 104.31/x
  3. Step 3: Cross multiply
    110.19x = 151.13 × 104.31
  4. Step 4: Simplify right side
    110.19x = 15,764.37
  5. Step 5: Solve for x
    x = 15,764.37/110.19
  6. Step 6: Final answer
    x = 143.07

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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.