Home / 185,321.21-255,743.60-100,438.29

Finding the Fourth Proportional to 185,321.21, 255,743.60 and 100,438.29

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Solution

The fourth proportional to 185,321.21, 255,743.60 and 100,438.29 is: 138,605.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,321.21 : 255,743.60 = 100,438.29 : x
  2. Step 2: Convert to fraction form
    185,321.21/255,743.60 = 100,438.29/x
  3. Step 3: Cross multiply
    185,321.21x = 255,743.60 × 100,438.29
  4. Step 4: Simplify right side
    185,321.21x = 25,686,449,360.25
  5. Step 5: Solve for x
    x = 25,686,449,360.25/185,321.21
  6. Step 6: Final answer
    x = 138,605.02

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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.