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Finding the Fourth Proportional to 185,361.67, 255,799.49 and 100,478.73

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Solution

The fourth proportional to 185,361.67, 255,799.49 and 100,478.73 is: 138,660.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,361.67 : 255,799.49 = 100,478.73 : x
  2. Step 2: Convert to fraction form
    185,361.67/255,799.49 = 100,478.73/x
  3. Step 3: Cross multiply
    185,361.67x = 255,799.49 × 100,478.73
  4. Step 4: Simplify right side
    185,361.67x = 25,702,407,889.85
  5. Step 5: Solve for x
    x = 25,702,407,889.85/185,361.67
  6. Step 6: Final answer
    x = 138,660.86

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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.