Home / 185,221.24-255,605.43-100,338.64

Finding the Fourth Proportional to 185,221.24, 255,605.43 and 100,338.64

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Solution

The fourth proportional to 185,221.24, 255,605.43 and 100,338.64 is: 138,467.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,221.24 : 255,605.43 = 100,338.64 : x
  2. Step 2: Convert to fraction form
    185,221.24/255,605.43 = 100,338.64/x
  3. Step 3: Cross multiply
    185,221.24x = 255,605.43 × 100,338.64
  4. Step 4: Simplify right side
    185,221.24x = 25,647,101,222.82
  5. Step 5: Solve for x
    x = 25,647,101,222.82/185,221.24
  6. Step 6: Final answer
    x = 138,467.39

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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.