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Finding the Fourth Proportional to 134.02, 201.30 and 85.96

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Solution

The fourth proportional to 134.02, 201.30 and 85.96 is: 129.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.02 : 201.30 = 85.96 : x
  2. Step 2: Convert to fraction form
    134.02/201.30 = 85.96/x
  3. Step 3: Cross multiply
    134.02x = 201.30 × 85.96
  4. Step 4: Simplify right side
    134.02x = 17,303.75
  5. Step 5: Solve for x
    x = 17,303.75/134.02
  6. Step 6: Final answer
    x = 129.11

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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.