Home / 206,079.05-309,139.53-71,125.56

Finding the Fourth Proportional to 206,079.05, 309,139.53 and 71,125.56

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Solution

The fourth proportional to 206,079.05, 309,139.53 and 71,125.56 is: 106,695.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,079.05 : 309,139.53 = 71,125.56 : x
  2. Step 2: Convert to fraction form
    206,079.05/309,139.53 = 71,125.56/x
  3. Step 3: Cross multiply
    206,079.05x = 309,139.53 × 71,125.56
  4. Step 4: Simplify right side
    206,079.05x = 21,987,722,189.39
  5. Step 5: Solve for x
    x = 21,987,722,189.39/206,079.05
  6. Step 6: Final answer
    x = 106,695.57

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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.