Home / 141,986.43-195,942.32-78,326.51

Finding the Fourth Proportional to 141,986.43, 195,942.32 and 78,326.51

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Solution

The fourth proportional to 141,986.43, 195,942.32 and 78,326.51 is: 108,091.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,986.43 : 195,942.32 = 78,326.51 : x
  2. Step 2: Convert to fraction form
    141,986.43/195,942.32 = 78,326.51/x
  3. Step 3: Cross multiply
    141,986.43x = 195,942.32 × 78,326.51
  4. Step 4: Simplify right side
    141,986.43x = 15,347,476,715.56
  5. Step 5: Solve for x
    x = 15,347,476,715.56/141,986.43
  6. Step 6: Final answer
    x = 108,091.15

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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.