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Finding the Fourth Proportional to 144, 199.06 and 131.19

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Solution

The fourth proportional to 144, 199.06 and 131.19 is: 181.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    144 : 199.06 = 131.19 : x
  2. Step 2: Convert to fraction form
    144/199.06 = 131.19/x
  3. Step 3: Cross multiply
    144x = 199.06 × 131.19
  4. Step 4: Simplify right side
    144x = 26,114.73
  5. Step 5: Solve for x
    x = 26,114.73/144
  6. Step 6: Final answer
    x = 181.35

Related Problems

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Double scale
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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.