Home / 206,867.28-309,688.56-127,727.04

Finding the Fourth Proportional to 206,867.28, 309,688.56 and 127,727.04

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Solution

The fourth proportional to 206,867.28, 309,688.56 and 127,727.04 is: 191,212.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,867.28 : 309,688.56 = 127,727.04 : x
  2. Step 2: Convert to fraction form
    206,867.28/309,688.56 = 127,727.04/x
  3. Step 3: Cross multiply
    206,867.28x = 309,688.56 × 127,727.04
  4. Step 4: Simplify right side
    206,867.28x = 39,555,603,090.66
  5. Step 5: Solve for x
    x = 39,555,603,090.66/206,867.28
  6. Step 6: Final answer
    x = 191,212.47

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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.