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Finding the Fourth Proportional to 129.81, 193.71 and 116.19

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Solution

The fourth proportional to 129.81, 193.71 and 116.19 is: 173.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    129.81 : 193.71 = 116.19 : x
  2. Step 2: Convert to fraction form
    129.81/193.71 = 116.19/x
  3. Step 3: Cross multiply
    129.81x = 193.71 × 116.19
  4. Step 4: Simplify right side
    129.81x = 22,507.16
  5. Step 5: Solve for x
    x = 22,507.16/129.81
  6. Step 6: Final answer
    x = 173.39

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.