Home / 259,658.10-389,195.55-109,872.90

Finding the Fourth Proportional to 259,658.10, 389,195.55 and 109,872.90

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Solution

The fourth proportional to 259,658.10, 389,195.55 and 109,872.90 is: 164,685.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,658.10 : 389,195.55 = 109,872.90 : x
  2. Step 2: Convert to fraction form
    259,658.10/389,195.55 = 109,872.90/x
  3. Step 3: Cross multiply
    259,658.10x = 389,195.55 × 109,872.90
  4. Step 4: Simplify right side
    259,658.10x = 42,762,043,745.60
  5. Step 5: Solve for x
    x = 42,762,043,745.60/259,658.10
  6. Step 6: Final answer
    x = 164,685.96

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1.5x scale

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.