Home / 259,124.39-388,667.84-81,682.19

Finding the Fourth Proportional to 259,124.39, 388,667.84 and 81,682.19

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Solution

The fourth proportional to 259,124.39, 388,667.84 and 81,682.19 is: 122,517.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,124.39 : 388,667.84 = 81,682.19 : x
  2. Step 2: Convert to fraction form
    259,124.39/388,667.84 = 81,682.19/x
  3. Step 3: Cross multiply
    259,124.39x = 388,667.84 × 81,682.19
  4. Step 4: Simplify right side
    259,124.39x = 31,747,239,945.36
  5. Step 5: Solve for x
    x = 31,747,239,945.36/259,124.39
  6. Step 6: Final answer
    x = 122,517.37

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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.