Home / 149,209.43-205,908.42-81,226.15

Finding the Fourth Proportional to 149,209.43, 205,908.42 and 81,226.15

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Solution

The fourth proportional to 149,209.43, 205,908.42 and 81,226.15 is: 112,091.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,209.43 : 205,908.42 = 81,226.15 : x
  2. Step 2: Convert to fraction form
    149,209.43/205,908.42 = 81,226.15/x
  3. Step 3: Cross multiply
    149,209.43x = 205,908.42 × 81,226.15
  4. Step 4: Simplify right side
    149,209.43x = 16,725,148,209.18
  5. Step 5: Solve for x
    x = 16,725,148,209.18/149,209.43
  6. Step 6: Final answer
    x = 112,091.76

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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.