Home / 141,991.10-195,941.12-81,519.18

Finding the Fourth Proportional to 141,991.10, 195,941.12 and 81,519.18

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Solution

The fourth proportional to 141,991.10, 195,941.12 and 81,519.18 is: 112,492.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,991.10 : 195,941.12 = 81,519.18 : x
  2. Step 2: Convert to fraction form
    141,991.10/195,941.12 = 81,519.18/x
  3. Step 3: Cross multiply
    141,991.10x = 195,941.12 × 81,519.18
  4. Step 4: Simplify right side
    141,991.10x = 15,972,959,023.09
  5. Step 5: Solve for x
    x = 15,972,959,023.09/141,991.10
  6. Step 6: Final answer
    x = 112,492.68

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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.