Home / 206,504.20-309,756.30-127,772.20

Finding the Fourth Proportional to 206,504.20, 309,756.30 and 127,772.20

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Solution

The fourth proportional to 206,504.20, 309,756.30 and 127,772.20 is: 191,658.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,504.20 : 309,756.30 = 127,772.20 : x
  2. Step 2: Convert to fraction form
    206,504.20/309,756.30 = 127,772.20/x
  3. Step 3: Cross multiply
    206,504.20x = 309,756.30 × 127,772.20
  4. Step 4: Simplify right side
    206,504.20x = 39,578,243,914.86
  5. Step 5: Solve for x
    x = 39,578,243,914.86/206,504.20
  6. Step 6: Final answer
    x = 191,658.30

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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.