Home / 159,181.11-219,665.25-87,561.09

Finding the Fourth Proportional to 159,181.11, 219,665.25 and 87,561.09

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Solution

The fourth proportional to 159,181.11, 219,665.25 and 87,561.09 is: 120,831.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,181.11 : 219,665.25 = 87,561.09 : x
  2. Step 2: Convert to fraction form
    159,181.11/219,665.25 = 87,561.09/x
  3. Step 3: Cross multiply
    159,181.11x = 219,665.25 × 87,561.09
  4. Step 4: Simplify right side
    159,181.11x = 19,234,128,725.12
  5. Step 5: Solve for x
    x = 19,234,128,725.12/159,181.11
  6. Step 6: Final answer
    x = 120,831.73

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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.