Home / 205,173.87-283,144.73-128,696.21

Finding the Fourth Proportional to 205,173.87, 283,144.73 and 128,696.21

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Solution

The fourth proportional to 205,173.87, 283,144.73 and 128,696.21 is: 177,603.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,173.87 : 283,144.73 = 128,696.21 : x
  2. Step 2: Convert to fraction form
    205,173.87/283,144.73 = 128,696.21/x
  3. Step 3: Cross multiply
    205,173.87x = 283,144.73 × 128,696.21
  4. Step 4: Simplify right side
    205,173.87x = 36,439,653,632.47
  5. Step 5: Solve for x
    x = 36,439,653,632.47/205,173.87
  6. Step 6: Final answer
    x = 177,603.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.