Home / 272,109.83-408,165.55-82,571.72

Finding the Fourth Proportional to 272,109.83, 408,165.55 and 82,571.72

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Solution

The fourth proportional to 272,109.83, 408,165.55 and 82,571.72 is: 123,857.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,109.83 : 408,165.55 = 82,571.72 : x
  2. Step 2: Convert to fraction form
    272,109.83/408,165.55 = 82,571.72/x
  3. Step 3: Cross multiply
    272,109.83x = 408,165.55 × 82,571.72
  4. Step 4: Simplify right side
    272,109.83x = 33,702,929,260.99
  5. Step 5: Solve for x
    x = 33,702,929,260.99/272,109.83
  6. Step 6: Final answer
    x = 123,857.82

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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.