Home / 199,631.80-299,447.70-81,242.20

Finding the Fourth Proportional to 199,631.80, 299,447.70 and 81,242.20

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Solution

The fourth proportional to 199,631.80, 299,447.70 and 81,242.20 is: 121,863.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,631.80 : 299,447.70 = 81,242.20 : x
  2. Step 2: Convert to fraction form
    199,631.80/299,447.70 = 81,242.20/x
  3. Step 3: Cross multiply
    199,631.80x = 299,447.70 × 81,242.20
  4. Step 4: Simplify right side
    199,631.80x = 24,327,789,932.94
  5. Step 5: Solve for x
    x = 24,327,789,932.94/199,631.80
  6. Step 6: Final answer
    x = 121,863.30

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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.