Home / 204,063.30-306,143.55-85,673.70

Finding the Fourth Proportional to 204,063.30, 306,143.55 and 85,673.70

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Solution

The fourth proportional to 204,063.30, 306,143.55 and 85,673.70 is: 128,530.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,063.30 : 306,143.55 = 85,673.70 : x
  2. Step 2: Convert to fraction form
    204,063.30/306,143.55 = 85,673.70/x
  3. Step 3: Cross multiply
    204,063.30x = 306,143.55 × 85,673.70
  4. Step 4: Simplify right side
    204,063.30x = 26,228,450,659.64
  5. Step 5: Solve for x
    x = 26,228,450,659.64/204,063.30
  6. Step 6: Final answer
    x = 128,530.95

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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.