Home / 199,823.40-299,589.30-81,433.80

Finding the Fourth Proportional to 199,823.40, 299,589.30 and 81,433.80

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Solution

The fourth proportional to 199,823.40, 299,589.30 and 81,433.80 is: 122,091.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,823.40 : 299,589.30 = 81,433.80 : x
  2. Step 2: Convert to fraction form
    199,823.40/299,589.30 = 81,433.80/x
  3. Step 3: Cross multiply
    199,823.40x = 299,589.30 × 81,433.80
  4. Step 4: Simplify right side
    199,823.40x = 24,396,695,138.34
  5. Step 5: Solve for x
    x = 24,396,695,138.34/199,823.40
  6. Step 6: Final answer
    x = 122,091.28

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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.