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Finding the Fourth Proportional to 95.83, 131.81 and 79.12

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Solution

The fourth proportional to 95.83, 131.81 and 79.12 is: 108.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.83 : 131.81 = 79.12 : x
  2. Step 2: Convert to fraction form
    95.83/131.81 = 79.12/x
  3. Step 3: Cross multiply
    95.83x = 131.81 × 79.12
  4. Step 4: Simplify right side
    95.83x = 10,428.81
  5. Step 5: Solve for x
    x = 10,428.81/95.83
  6. Step 6: Final answer
    x = 108.83

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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.