Home / 206,856.10-309,992.55-127,735.30

Finding the Fourth Proportional to 206,856.10, 309,992.55 and 127,735.30

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Solution

The fourth proportional to 206,856.10, 309,992.55 and 127,735.30 is: 191,422.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,856.10 : 309,992.55 = 127,735.30 : x
  2. Step 2: Convert to fraction form
    206,856.10/309,992.55 = 127,735.30/x
  3. Step 3: Cross multiply
    206,856.10x = 309,992.55 × 127,735.30
  4. Step 4: Simplify right side
    206,856.10x = 39,596,991,372.02
  5. Step 5: Solve for x
    x = 39,596,991,372.02/206,856.10
  6. Step 6: Final answer
    x = 191,422.88

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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.