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Finding the Fourth Proportional to 129.96, 179.28 and 94.98

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Solution

The fourth proportional to 129.96, 179.28 and 94.98 is: 131.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    129.96 : 179.28 = 94.98 : x
  2. Step 2: Convert to fraction form
    129.96/179.28 = 94.98/x
  3. Step 3: Cross multiply
    129.96x = 179.28 × 94.98
  4. Step 4: Simplify right side
    129.96x = 17,028.01
  5. Step 5: Solve for x
    x = 17,028.01/129.96
  6. Step 6: Final answer
    x = 131.03

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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.