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Finding the Fourth Proportional to 96.18, 131.78 and 94.98

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Solution

The fourth proportional to 96.18, 131.78 and 94.98 is: 130.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.18 : 131.78 = 94.98 : x
  2. Step 2: Convert to fraction form
    96.18/131.78 = 94.98/x
  3. Step 3: Cross multiply
    96.18x = 131.78 × 94.98
  4. Step 4: Simplify right side
    96.18x = 12,516.46
  5. Step 5: Solve for x
    x = 12,516.46/96.18
  6. Step 6: Final answer
    x = 130.14

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.