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Finding the Fourth Proportional to 134.23, 185.22 and 76

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Solution

The fourth proportional to 134.23, 185.22 and 76 is: 104.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.23 : 185.22 = 76 : x
  2. Step 2: Convert to fraction form
    134.23/185.22 = 76/x
  3. Step 3: Cross multiply
    134.23x = 185.22 × 76
  4. Step 4: Simplify right side
    134.23x = 14,076.72
  5. Step 5: Solve for x
    x = 14,076.72/134.23
  6. Step 6: Final answer
    x = 104.87

Related Problems

Find fourth proportional to 67.12, 92.61 and 38
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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.