Home / 259,932.90-389,936.54-80,033.55

Finding the Fourth Proportional to 259,932.90, 389,936.54 and 80,033.55

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Solution

The fourth proportional to 259,932.90, 389,936.54 and 80,033.55 is: 120,061.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,932.90 : 389,936.54 = 80,033.55 : x
  2. Step 2: Convert to fraction form
    259,932.90/389,936.54 = 80,033.55/x
  3. Step 3: Cross multiply
    259,932.90x = 389,936.54 × 80,033.55
  4. Step 4: Simplify right side
    259,932.90x = 31,208,004,308.74
  5. Step 5: Solve for x
    x = 31,208,004,308.74/259,932.90
  6. Step 6: Final answer
    x = 120,061.77

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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.