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Finding the Fourth Proportional to 200,083.94, 300,125.87 and 81,755.15

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Solution

The fourth proportional to 200,083.94, 300,125.87 and 81,755.15 is: 122,632.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,083.94 : 300,125.87 = 81,755.15 : x
  2. Step 2: Convert to fraction form
    200,083.94/300,125.87 = 81,755.15/x
  3. Step 3: Cross multiply
    200,083.94x = 300,125.87 × 81,755.15
  4. Step 4: Simplify right side
    200,083.94x = 24,536,835,520.73
  5. Step 5: Solve for x
    x = 24,536,835,520.73/200,083.94
  6. Step 6: Final answer
    x = 122,632.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.