Home / 203,766.20-305,649.30-127,986.65

Finding the Fourth Proportional to 203,766.20, 305,649.30 and 127,986.65

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Solution

The fourth proportional to 203,766.20, 305,649.30 and 127,986.65 is: 191,979.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,766.20 : 305,649.30 = 127,986.65 : x
  2. Step 2: Convert to fraction form
    203,766.20/305,649.30 = 127,986.65/x
  3. Step 3: Cross multiply
    203,766.20x = 305,649.30 × 127,986.65
  4. Step 4: Simplify right side
    203,766.20x = 39,119,029,981.85
  5. Step 5: Solve for x
    x = 39,119,029,981.85/203,766.20
  6. Step 6: Final answer
    x = 191,979.98

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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.