Home / 206,739.45-285,344.91-126,149.72

Finding the Fourth Proportional to 206,739.45, 285,344.91 and 126,149.72

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Solution

The fourth proportional to 206,739.45, 285,344.91 and 126,149.72 is: 174,113.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,739.45 : 285,344.91 = 126,149.72 : x
  2. Step 2: Convert to fraction form
    206,739.45/285,344.91 = 126,149.72/x
  3. Step 3: Cross multiply
    206,739.45x = 285,344.91 × 126,149.72
  4. Step 4: Simplify right side
    206,739.45x = 35,996,179,073.20
  5. Step 5: Solve for x
    x = 35,996,179,073.20/206,739.45
  6. Step 6: Final answer
    x = 174,113.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.