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Finding the Fourth Proportional to 138,003.30, 206,895.60 and 75,673.80

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Solution

The fourth proportional to 138,003.30, 206,895.60 and 75,673.80 is: 113,450.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,003.30 : 206,895.60 = 75,673.80 : x
  2. Step 2: Convert to fraction form
    138,003.30/206,895.60 = 75,673.80/x
  3. Step 3: Cross multiply
    138,003.30x = 206,895.60 × 75,673.80
  4. Step 4: Simplify right side
    138,003.30x = 15,656,576,255.28
  5. Step 5: Solve for x
    x = 15,656,576,255.28/138,003.30
  6. Step 6: Final answer
    x = 113,450.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.