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Finding the Fourth Proportional to 141,494.65, 195,290.44 and 81,105.81

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Solution

The fourth proportional to 141,494.65, 195,290.44 and 81,105.81 is: 111,941.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,494.65 : 195,290.44 = 81,105.81 : x
  2. Step 2: Convert to fraction form
    141,494.65/195,290.44 = 81,105.81/x
  3. Step 3: Cross multiply
    141,494.65x = 195,290.44 × 81,105.81
  4. Step 4: Simplify right side
    141,494.65x = 15,839,188,842.57
  5. Step 5: Solve for x
    x = 15,839,188,842.57/141,494.65
  6. Step 6: Final answer
    x = 111,941.96

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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.