Home / 199,986.82-299,995.68-66,867.64

Finding the Fourth Proportional to 199,986.82, 299,995.68 and 66,867.64

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Solution

The fourth proportional to 199,986.82, 299,995.68 and 66,867.64 is: 100,306.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,986.82 : 299,995.68 = 66,867.64 : x
  2. Step 2: Convert to fraction form
    199,986.82/299,995.68 = 66,867.64/x
  3. Step 3: Cross multiply
    199,986.82x = 299,995.68 × 66,867.64
  4. Step 4: Simplify right side
    199,986.82x = 20,060,003,131.80
  5. Step 5: Solve for x
    x = 20,060,003,131.80/199,986.82
  6. Step 6: Final answer
    x = 100,306.63

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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.