Home / 259,941.68-389,949.66-80,042.30

Finding the Fourth Proportional to 259,941.68, 389,949.66 and 80,042.30

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Solution

The fourth proportional to 259,941.68, 389,949.66 and 80,042.30 is: 120,074.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,941.68 : 389,949.66 = 80,042.30 : x
  2. Step 2: Convert to fraction form
    259,941.68/389,949.66 = 80,042.30/x
  3. Step 3: Cross multiply
    259,941.68x = 389,949.66 × 80,042.30
  4. Step 4: Simplify right side
    259,941.68x = 31,212,467,670.62
  5. Step 5: Solve for x
    x = 31,212,467,670.62/259,941.68
  6. Step 6: Final answer
    x = 120,074.89

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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.