Home / 206,664.13-309,707.48-111,689.56

Finding the Fourth Proportional to 206,664.13, 309,707.48 and 111,689.56

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Solution

The fourth proportional to 206,664.13, 309,707.48 and 111,689.56 is: 167,378.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,664.13 : 309,707.48 = 111,689.56 : x
  2. Step 2: Convert to fraction form
    206,664.13/309,707.48 = 111,689.56/x
  3. Step 3: Cross multiply
    206,664.13x = 309,707.48 × 111,689.56
  4. Step 4: Simplify right side
    206,664.13x = 34,591,092,836.27
  5. Step 5: Solve for x
    x = 34,591,092,836.27/206,664.13
  6. Step 6: Final answer
    x = 167,378.31

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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.