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Finding the Fourth Proportional to 98.94, 137.18 and 95.83

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Solution

The fourth proportional to 98.94, 137.18 and 95.83 is: 132.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.94 : 137.18 = 95.83 : x
  2. Step 2: Convert to fraction form
    98.94/137.18 = 95.83/x
  3. Step 3: Cross multiply
    98.94x = 137.18 × 95.83
  4. Step 4: Simplify right side
    98.94x = 13,145.96
  5. Step 5: Solve for x
    x = 13,145.96/98.94
  6. Step 6: Final answer
    x = 132.87

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.