Home / 141,986.88-195,940.80-78,327.36

Finding the Fourth Proportional to 141,986.88, 195,940.80 and 78,327.36

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Solution

The fourth proportional to 141,986.88, 195,940.80 and 78,327.36 is: 108,091.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,986.88 : 195,940.80 = 78,327.36 : x
  2. Step 2: Convert to fraction form
    141,986.88/195,940.80 = 78,327.36/x
  3. Step 3: Cross multiply
    141,986.88x = 195,940.80 × 78,327.36
  4. Step 4: Simplify right side
    141,986.88x = 15,347,525,580.29
  5. Step 5: Solve for x
    x = 15,347,525,580.29/141,986.88
  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.