Home / 149,198.43-205,896.45-81,217.35

Finding the Fourth Proportional to 149,198.43, 205,896.45 and 81,217.35

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Solution

The fourth proportional to 149,198.43, 205,896.45 and 81,217.35 is: 112,081.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,198.43 : 205,896.45 = 81,217.35 : x
  2. Step 2: Convert to fraction form
    149,198.43/205,896.45 = 81,217.35/x
  3. Step 3: Cross multiply
    149,198.43x = 205,896.45 × 81,217.35
  4. Step 4: Simplify right side
    149,198.43x = 16,722,364,043.41
  5. Step 5: Solve for x
    x = 16,722,364,043.41/149,198.43
  6. Step 6: Final answer
    x = 112,081.37

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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.