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Finding the Fourth Proportional to 204,069.70, 306,250.35 and 85,825.90

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Solution

The fourth proportional to 204,069.70, 306,250.35 and 85,825.90 is: 128,800.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,069.70 : 306,250.35 = 85,825.90 : x
  2. Step 2: Convert to fraction form
    204,069.70/306,250.35 = 85,825.90/x
  3. Step 3: Cross multiply
    204,069.70x = 306,250.35 × 85,825.90
  4. Step 4: Simplify right side
    204,069.70x = 26,284,211,914.07
  5. Step 5: Solve for x
    x = 26,284,211,914.07/204,069.70
  6. Step 6: Final answer
    x = 128,800.17

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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.