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Finding the Fourth Proportional to 143.94, 198.54 and 119.37

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Solution

The fourth proportional to 143.94, 198.54 and 119.37 is: 164.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143.94 : 198.54 = 119.37 : x
  2. Step 2: Convert to fraction form
    143.94/198.54 = 119.37/x
  3. Step 3: Cross multiply
    143.94x = 198.54 × 119.37
  4. Step 4: Simplify right side
    143.94x = 23,699.72
  5. Step 5: Solve for x
    x = 23,699.72/143.94
  6. Step 6: Final answer
    x = 164.65

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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.