Home / 259,517.19-389,136.99-133,105.86

Finding the Fourth Proportional to 259,517.19, 389,136.99 and 133,105.86

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Solution

The fourth proportional to 259,517.19, 389,136.99 and 133,105.86 is: 199,587.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,517.19 : 389,136.99 = 133,105.86 : x
  2. Step 2: Convert to fraction form
    259,517.19/389,136.99 = 133,105.86/x
  3. Step 3: Cross multiply
    259,517.19x = 389,136.99 × 133,105.86
  4. Step 4: Simplify right side
    259,517.19x = 51,796,413,711.76
  5. Step 5: Solve for x
    x = 51,796,413,711.76/259,517.19
  6. Step 6: Final answer
    x = 199,587.60

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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.