Home / 204,081.20-306,267.60-85,837.40

Finding the Fourth Proportional to 204,081.20, 306,267.60 and 85,837.40

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Solution

The fourth proportional to 204,081.20, 306,267.60 and 85,837.40 is: 128,817.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,081.20 : 306,267.60 = 85,837.40 : x
  2. Step 2: Convert to fraction form
    204,081.20/306,267.60 = 85,837.40/x
  3. Step 3: Cross multiply
    204,081.20x = 306,267.60 × 85,837.40
  4. Step 4: Simplify right side
    204,081.20x = 26,289,214,488.24
  5. Step 5: Solve for x
    x = 26,289,214,488.24/204,081.20
  6. Step 6: Final answer
    x = 128,817.42

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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.