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Finding the Fourth Proportional to 181,987.88, 251,145.10 and 100,319.03

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Solution

The fourth proportional to 181,987.88, 251,145.10 and 100,319.03 is: 138,441.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,987.88 : 251,145.10 = 100,319.03 : x
  2. Step 2: Convert to fraction form
    181,987.88/251,145.10 = 100,319.03/x
  3. Step 3: Cross multiply
    181,987.88x = 251,145.10 × 100,319.03
  4. Step 4: Simplify right side
    181,987.88x = 25,194,632,821.25
  5. Step 5: Solve for x
    x = 25,194,632,821.25/181,987.88
  6. Step 6: Final answer
    x = 138,441.27

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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.