Home / 181,256.12-250,137.99-100,679.78

Finding the Fourth Proportional to 181,256.12, 250,137.99 and 100,679.78

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Solution

The fourth proportional to 181,256.12, 250,137.99 and 100,679.78 is: 138,940.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,256.12 : 250,137.99 = 100,679.78 : x
  2. Step 2: Convert to fraction form
    181,256.12/250,137.99 = 100,679.78/x
  3. Step 3: Cross multiply
    181,256.12x = 250,137.99 × 100,679.78
  4. Step 4: Simplify right side
    181,256.12x = 25,183,837,802.84
  5. Step 5: Solve for x
    x = 25,183,837,802.84/181,256.12
  6. Step 6: Final answer
    x = 138,940.62

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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.