Home / 141,563.15-195,365.57-81,137.68

Finding the Fourth Proportional to 141,563.15, 195,365.57 and 81,137.68

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Solution

The fourth proportional to 141,563.15, 195,365.57 and 81,137.68 is: 111,974.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,563.15 : 195,365.57 = 81,137.68 : x
  2. Step 2: Convert to fraction form
    141,563.15/195,365.57 = 81,137.68/x
  3. Step 3: Cross multiply
    141,563.15x = 195,365.57 × 81,137.68
  4. Step 4: Simplify right side
    141,563.15x = 15,851,508,207.58
  5. Step 5: Solve for x
    x = 15,851,508,207.58/141,563.15
  6. Step 6: Final answer
    x = 111,974.82

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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.