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Finding the Fourth Proportional to 203,025.78, 280,171.17 and 111,144.87

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Solution

The fourth proportional to 203,025.78, 280,171.17 and 111,144.87 is: 153,377.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,025.78 : 280,171.17 = 111,144.87 : x
  2. Step 2: Convert to fraction form
    203,025.78/280,171.17 = 111,144.87/x
  3. Step 3: Cross multiply
    203,025.78x = 280,171.17 × 111,144.87
  4. Step 4: Simplify right side
    203,025.78x = 31,139,588,267.40
  5. Step 5: Solve for x
    x = 31,139,588,267.40/203,025.78
  6. Step 6: Final answer
    x = 153,377.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.