Home / 207,658.26-311,513.20-81,282.06

Finding the Fourth Proportional to 207,658.26, 311,513.20 and 81,282.06

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Solution

The fourth proportional to 207,658.26, 311,513.20 and 81,282.06 is: 121,933.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,658.26 : 311,513.20 = 81,282.06 : x
  2. Step 2: Convert to fraction form
    207,658.26/311,513.20 = 81,282.06/x
  3. Step 3: Cross multiply
    207,658.26x = 311,513.20 × 81,282.06
  4. Step 4: Simplify right side
    207,658.26x = 25,320,434,613.19
  5. Step 5: Solve for x
    x = 25,320,434,613.19/207,658.26
  6. Step 6: Final answer
    x = 121,933.19

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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.