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Finding the Fourth Proportional to 114.15, 170.43 and 93.81

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Solution

The fourth proportional to 114.15, 170.43 and 93.81 is: 140.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.15 : 170.43 = 93.81 : x
  2. Step 2: Convert to fraction form
    114.15/170.43 = 93.81/x
  3. Step 3: Cross multiply
    114.15x = 170.43 × 93.81
  4. Step 4: Simplify right side
    114.15x = 15,988.04
  5. Step 5: Solve for x
    x = 15,988.04/114.15
  6. Step 6: Final answer
    x = 140.06

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Why These Related Problems?

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