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Finding the Fourth Proportional to 134.85, 201.98 and 104.18

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Solution

The fourth proportional to 134.85, 201.98 and 104.18 is: 156.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.85 : 201.98 = 104.18 : x
  2. Step 2: Convert to fraction form
    134.85/201.98 = 104.18/x
  3. Step 3: Cross multiply
    134.85x = 201.98 × 104.18
  4. Step 4: Simplify right side
    134.85x = 21,040.75
  5. Step 5: Solve for x
    x = 21,040.75/134.85
  6. Step 6: Final answer
    x = 156.03

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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.