Home / 207,713.50-311,445.46-81,203.07

Finding the Fourth Proportional to 207,713.50, 311,445.46 and 81,203.07

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Solution

The fourth proportional to 207,713.50, 311,445.46 and 81,203.07 is: 121,755.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,713.50 : 311,445.46 = 81,203.07 : x
  2. Step 2: Convert to fraction form
    207,713.50/311,445.46 = 81,203.07/x
  3. Step 3: Cross multiply
    207,713.50x = 311,445.46 × 81,203.07
  4. Step 4: Simplify right side
    207,713.50x = 25,290,327,489.56
  5. Step 5: Solve for x
    x = 25,290,327,489.56/207,713.50
  6. Step 6: Final answer
    x = 121,755.82

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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.