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Finding the Fourth Proportional to 204,070.70, 306,251.85 and 85,826.90

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Solution

The fourth proportional to 204,070.70, 306,251.85 and 85,826.90 is: 128,801.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,070.70 : 306,251.85 = 85,826.90 : x
  2. Step 2: Convert to fraction form
    204,070.70/306,251.85 = 85,826.90/x
  3. Step 3: Cross multiply
    204,070.70x = 306,251.85 × 85,826.90
  4. Step 4: Simplify right side
    204,070.70x = 26,284,646,904.77
  5. Step 5: Solve for x
    x = 26,284,646,904.77/204,070.70
  6. Step 6: Final answer
    x = 128,801.67

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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.