Home / 215,879.10-323,816.49-121,109.10

Finding the Fourth Proportional to 215,879.10, 323,816.49 and 121,109.10

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Solution

The fourth proportional to 215,879.10, 323,816.49 and 121,109.10 is: 181,662.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,879.10 : 323,816.49 = 121,109.10 : x
  2. Step 2: Convert to fraction form
    215,879.10/323,816.49 = 121,109.10/x
  3. Step 3: Cross multiply
    215,879.10x = 323,816.49 × 121,109.10
  4. Step 4: Simplify right side
    215,879.10x = 39,217,123,669.06
  5. Step 5: Solve for x
    x = 39,217,123,669.06/215,879.10
  6. Step 6: Final answer
    x = 181,662.44

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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.