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Finding the Fourth Proportional to 203,774.52, 305,563.47 and 85,414.08

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Solution

The fourth proportional to 203,774.52, 305,563.47 and 85,414.08 is: 128,079.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,774.52 : 305,563.47 = 85,414.08 : x
  2. Step 2: Convert to fraction form
    203,774.52/305,563.47 = 85,414.08/x
  3. Step 3: Cross multiply
    203,774.52x = 305,563.47 × 85,414.08
  4. Step 4: Simplify right side
    203,774.52x = 26,099,422,671.66
  5. Step 5: Solve for x
    x = 26,099,422,671.66/203,774.52
  6. Step 6: Final answer
    x = 128,079.91

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1.5x scale

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.