Home / 200,587.58-276,841.36-128,021.78

Finding the Fourth Proportional to 200,587.58, 276,841.36 and 128,021.78

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Solution

The fourth proportional to 200,587.58, 276,841.36 and 128,021.78 is: 176,689.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,587.58 : 276,841.36 = 128,021.78 : x
  2. Step 2: Convert to fraction form
    200,587.58/276,841.36 = 128,021.78/x
  3. Step 3: Cross multiply
    200,587.58x = 276,841.36 × 128,021.78
  4. Step 4: Simplify right side
    200,587.58x = 35,441,723,684.82
  5. Step 5: Solve for x
    x = 35,441,723,684.82/200,587.58
  6. Step 6: Final answer
    x = 176,689.52

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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.