Home / 200,781.08-301,021.83-120,800.31

Finding the Fourth Proportional to 200,781.08, 301,021.83 and 120,800.31

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Solution

The fourth proportional to 200,781.08, 301,021.83 and 120,800.31 is: 181,110.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,781.08 : 301,021.83 = 120,800.31 : x
  2. Step 2: Convert to fraction form
    200,781.08/301,021.83 = 120,800.31/x
  3. Step 3: Cross multiply
    200,781.08x = 301,021.83 × 120,800.31
  4. Step 4: Simplify right side
    200,781.08x = 36,363,530,380.77
  5. Step 5: Solve for x
    x = 36,363,530,380.77/200,781.08
  6. Step 6: Final answer
    x = 181,110.35

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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.