Home / 204,433.30-306,540.60-85,970.80

Finding the Fourth Proportional to 204,433.30, 306,540.60 and 85,970.80

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Solution

The fourth proportional to 204,433.30, 306,540.60 and 85,970.80 is: 128,910.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,433.30 : 306,540.60 = 85,970.80 : x
  2. Step 2: Convert to fraction form
    204,433.30/306,540.60 = 85,970.80/x
  3. Step 3: Cross multiply
    204,433.30x = 306,540.60 × 85,970.80
  4. Step 4: Simplify right side
    204,433.30x = 26,353,540,614.48
  5. Step 5: Solve for x
    x = 26,353,540,614.48/204,433.30
  6. Step 6: Final answer
    x = 128,910.21

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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.