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Finding the Fourth Proportional to 134.09, 201.13 and 80.00

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Solution

The fourth proportional to 134.09, 201.13 and 80.00 is: 119.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.09 : 201.13 = 80.00 : x
  2. Step 2: Convert to fraction form
    134.09/201.13 = 80.00/x
  3. Step 3: Cross multiply
    134.09x = 201.13 × 80.00
  4. Step 4: Simplify right side
    134.09x = 16,089.19
  5. Step 5: Solve for x
    x = 16,089.19/134.09
  6. Step 6: Final answer
    x = 119.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.