Home / 200,579.85-276,763.91-128,943.45

Finding the Fourth Proportional to 200,579.85, 276,763.91 and 128,943.45

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Solution

The fourth proportional to 200,579.85, 276,763.91 and 128,943.45 is: 177,918.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,579.85 : 276,763.91 = 128,943.45 : x
  2. Step 2: Convert to fraction form
    200,579.85/276,763.91 = 128,943.45/x
  3. Step 3: Cross multiply
    200,579.85x = 276,763.91 × 128,943.45
  4. Step 4: Simplify right side
    200,579.85x = 35,686,892,746.17
  5. Step 5: Solve for x
    x = 35,686,892,746.17/200,579.85
  6. Step 6: Final answer
    x = 177,918.63

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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.