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Finding the Fourth Proportional to 181,260.48, 250,134.30 and 100,686

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Solution

The fourth proportional to 181,260.48, 250,134.30 and 100,686 is: 138,943.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,260.48 : 250,134.30 = 100,686 : x
  2. Step 2: Convert to fraction form
    181,260.48/250,134.30 = 100,686/x
  3. Step 3: Cross multiply
    181,260.48x = 250,134.30 × 100,686
  4. Step 4: Simplify right side
    181,260.48x = 25,185,022,129.80
  5. Step 5: Solve for x
    x = 25,185,022,129.80/181,260.48
  6. Step 6: Final answer
    x = 138,943.81

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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.