Home / 204,089.20-306,279.60-85,845.40

Finding the Fourth Proportional to 204,089.20, 306,279.60 and 85,845.40

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Solution

The fourth proportional to 204,089.20, 306,279.60 and 85,845.40 is: 128,829.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,089.20 : 306,279.60 = 85,845.40 : x
  2. Step 2: Convert to fraction form
    204,089.20/306,279.60 = 85,845.40/x
  3. Step 3: Cross multiply
    204,089.20x = 306,279.60 × 85,845.40
  4. Step 4: Simplify right side
    204,089.20x = 26,292,694,773.84
  5. Step 5: Solve for x
    x = 26,292,694,773.84/204,089.20
  6. Step 6: Final answer
    x = 128,829.43

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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.