Home / 185,028.87-255,340.05-100,145.73

Finding the Fourth Proportional to 185,028.87, 255,340.05 and 100,145.73

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Solution

The fourth proportional to 185,028.87, 255,340.05 and 100,145.73 is: 138,201.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,028.87 : 255,340.05 = 100,145.73 : x
  2. Step 2: Convert to fraction form
    185,028.87/255,340.05 = 100,145.73/x
  3. Step 3: Cross multiply
    185,028.87x = 255,340.05 × 100,145.73
  4. Step 4: Simplify right side
    185,028.87x = 25,571,215,705.49
  5. Step 5: Solve for x
    x = 25,571,215,705.49/185,028.87
  6. Step 6: Final answer
    x = 138,201.22

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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.