Home / 185,022.48-255,331.01-100,139.54

Finding the Fourth Proportional to 185,022.48, 255,331.01 and 100,139.54

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Solution

The fourth proportional to 185,022.48, 255,331.01 and 100,139.54 is: 138,192.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,022.48 : 255,331.01 = 100,139.54 : x
  2. Step 2: Convert to fraction form
    185,022.48/255,331.01 = 100,139.54/x
  3. Step 3: Cross multiply
    185,022.48x = 255,331.01 × 100,139.54
  4. Step 4: Simplify right side
    185,022.48x = 25,568,729,889.14
  5. Step 5: Solve for x
    x = 25,568,729,889.14/185,022.48
  6. Step 6: Final answer
    x = 138,192.56

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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.