Home / 200,020.11-275,897.67-128,286.51

Finding the Fourth Proportional to 200,020.11, 275,897.67 and 128,286.51

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Solution

The fourth proportional to 200,020.11, 275,897.67 and 128,286.51 is: 176,951.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,020.11 : 275,897.67 = 128,286.51 : x
  2. Step 2: Convert to fraction form
    200,020.11/275,897.67 = 128,286.51/x
  3. Step 3: Cross multiply
    200,020.11x = 275,897.67 × 128,286.51
  4. Step 4: Simplify right side
    200,020.11x = 35,393,949,201.43
  5. Step 5: Solve for x
    x = 35,393,949,201.43/200,020.11
  6. Step 6: Final answer
    x = 176,951.95

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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.