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Finding the Fourth Proportional to 134.14, 185.13 and 85.07

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Solution

The fourth proportional to 134.14, 185.13 and 85.07 is: 117.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.14 : 185.13 = 85.07 : x
  2. Step 2: Convert to fraction form
    134.14/185.13 = 85.07/x
  3. Step 3: Cross multiply
    134.14x = 185.13 × 85.07
  4. Step 4: Simplify right side
    134.14x = 15,749.01
  5. Step 5: Solve for x
    x = 15,749.01/134.14
  6. Step 6: Final answer
    x = 117.41

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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.