Home / 200,335.06-276,650-128,839.60

Finding the Fourth Proportional to 200,335.06, 276,650 and 128,839.60

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Solution

The fourth proportional to 200,335.06, 276,650 and 128,839.60 is: 177,919.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,335.06 : 276,650 = 128,839.60 : x
  2. Step 2: Convert to fraction form
    200,335.06/276,650 = 128,839.60/x
  3. Step 3: Cross multiply
    200,335.06x = 276,650 × 128,839.60
  4. Step 4: Simplify right side
    200,335.06x = 35,643,475,340
  5. Step 5: Solve for x
    x = 35,643,475,340/200,335.06
  6. Step 6: Final answer
    x = 177,919.31

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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.