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Finding the Fourth Proportional to 203,167.71, 280,375.36 and 121,579.85

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Solution

The fourth proportional to 203,167.71, 280,375.36 and 121,579.85 is: 167,782.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,167.71 : 280,375.36 = 121,579.85 : x
  2. Step 2: Convert to fraction form
    203,167.71/280,375.36 = 121,579.85/x
  3. Step 3: Cross multiply
    203,167.71x = 280,375.36 × 121,579.85
  4. Step 4: Simplify right side
    203,167.71x = 34,087,994,609.48
  5. Step 5: Solve for x
    x = 34,087,994,609.48/203,167.71
  6. Step 6: Final answer
    x = 167,782.54

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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.