Home / 181,270.20-250,145.92-100,702.78

Finding the Fourth Proportional to 181,270.20, 250,145.92 and 100,702.78

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Solution

The fourth proportional to 181,270.20, 250,145.92 and 100,702.78 is: 138,965.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,270.20 : 250,145.92 = 100,702.78 : x
  2. Step 2: Convert to fraction form
    181,270.20/250,145.92 = 100,702.78/x
  3. Step 3: Cross multiply
    181,270.20x = 250,145.92 × 100,702.78
  4. Step 4: Simplify right side
    181,270.20x = 25,190,389,549.66
  5. Step 5: Solve for x
    x = 25,190,389,549.66/181,270.20
  6. Step 6: Final answer
    x = 138,965.97

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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.