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Finding the Fourth Proportional to 203,483.80, 305,335.05 and 85,167.10

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Solution

The fourth proportional to 203,483.80, 305,335.05 and 85,167.10 is: 127,796.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,483.80 : 305,335.05 = 85,167.10 : x
  2. Step 2: Convert to fraction form
    203,483.80/305,335.05 = 85,167.10/x
  3. Step 3: Cross multiply
    203,483.80x = 305,335.05 × 85,167.10
  4. Step 4: Simplify right side
    203,483.80x = 26,004,500,736.86
  5. Step 5: Solve for x
    x = 26,004,500,736.86/203,483.80
  6. Step 6: Final answer
    x = 127,796.42

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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.