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Finding the Fourth Proportional to 141.95, 195.62 and 115.67

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Solution

The fourth proportional to 141.95, 195.62 and 115.67 is: 159.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.95 : 195.62 = 115.67 : x
  2. Step 2: Convert to fraction form
    141.95/195.62 = 115.67/x
  3. Step 3: Cross multiply
    141.95x = 195.62 × 115.67
  4. Step 4: Simplify right side
    141.95x = 22,625.81
  5. Step 5: Solve for x
    x = 22,625.81/141.95
  6. Step 6: Final answer
    x = 159.40

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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.