Home / 185,321.36-255,742.44-100,438.40

Finding the Fourth Proportional to 185,321.36, 255,742.44 and 100,438.40

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Solution

The fourth proportional to 185,321.36, 255,742.44 and 100,438.40 is: 138,604.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,321.36 : 255,742.44 = 100,438.40 : x
  2. Step 2: Convert to fraction form
    185,321.36/255,742.44 = 100,438.40/x
  3. Step 3: Cross multiply
    185,321.36x = 255,742.44 × 100,438.40
  4. Step 4: Simplify right side
    185,321.36x = 25,686,361,485.70
  5. Step 5: Solve for x
    x = 25,686,361,485.70/185,321.36
  6. Step 6: Final answer
    x = 138,604.43

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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.