Home / 128,231.98-192,175.99-99,803.26

Finding the Fourth Proportional to 128,231.98, 192,175.99 and 99,803.26

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Solution

The fourth proportional to 128,231.98, 192,175.99 and 99,803.26 is: 149,571.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,231.98 : 192,175.99 = 99,803.26 : x
  2. Step 2: Convert to fraction form
    128,231.98/192,175.99 = 99,803.26/x
  3. Step 3: Cross multiply
    128,231.98x = 192,175.99 × 99,803.26
  4. Step 4: Simplify right side
    128,231.98x = 19,179,790,295.73
  5. Step 5: Solve for x
    x = 19,179,790,295.73/128,231.98
  6. Step 6: Final answer
    x = 149,571.04

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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.