Home / 149,394.87-206,163.05-81,414.81

Finding the Fourth Proportional to 149,394.87, 206,163.05 and 81,414.81

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Solution

The fourth proportional to 149,394.87, 206,163.05 and 81,414.81 is: 112,351.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,394.87 : 206,163.05 = 81,414.81 : x
  2. Step 2: Convert to fraction form
    149,394.87/206,163.05 = 81,414.81/x
  3. Step 3: Cross multiply
    149,394.87x = 206,163.05 × 81,414.81
  4. Step 4: Simplify right side
    149,394.87x = 16,784,725,137.70
  5. Step 5: Solve for x
    x = 16,784,725,137.70/149,394.87
  6. Step 6: Final answer
    x = 112,351.42

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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.