Home / 259,966.53-389,951.15-80,049.74

Finding the Fourth Proportional to 259,966.53, 389,951.15 and 80,049.74

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Solution

The fourth proportional to 259,966.53, 389,951.15 and 80,049.74 is: 120,075.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,966.53 : 389,951.15 = 80,049.74 : x
  2. Step 2: Convert to fraction form
    259,966.53/389,951.15 = 80,049.74/x
  3. Step 3: Cross multiply
    259,966.53x = 389,951.15 × 80,049.74
  4. Step 4: Simplify right side
    259,966.53x = 31,215,485,820.20
  5. Step 5: Solve for x
    x = 31,215,485,820.20/259,966.53
  6. Step 6: Final answer
    x = 120,075.02

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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.