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Finding the Fourth Proportional to 137.42, 205.23 and 119.19

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Solution

The fourth proportional to 137.42, 205.23 and 119.19 is: 178.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    137.42 : 205.23 = 119.19 : x
  2. Step 2: Convert to fraction form
    137.42/205.23 = 119.19/x
  3. Step 3: Cross multiply
    137.42x = 205.23 × 119.19
  4. Step 4: Simplify right side
    137.42x = 24,461.36
  5. Step 5: Solve for x
    x = 24,461.36/137.42
  6. Step 6: Final answer
    x = 178.01

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.