Home / 188,383.20-282,137.40-128,896.80

Finding the Fourth Proportional to 188,383.20, 282,137.40 and 128,896.80

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Solution

The fourth proportional to 188,383.20, 282,137.40 and 128,896.80 is: 193,045.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,383.20 : 282,137.40 = 128,896.80 : x
  2. Step 2: Convert to fraction form
    188,383.20/282,137.40 = 128,896.80/x
  3. Step 3: Cross multiply
    188,383.20x = 282,137.40 × 128,896.80
  4. Step 4: Simplify right side
    188,383.20x = 36,366,608,020.32
  5. Step 5: Solve for x
    x = 36,366,608,020.32/188,383.20
  6. Step 6: Final answer
    x = 193,045.92

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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.