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Finding the Fourth Proportional to 181,859.76, 250,971.84 and 100,190.88

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Solution

The fourth proportional to 181,859.76, 250,971.84 and 100,190.88 is: 138,266.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,859.76 : 250,971.84 = 100,190.88 : x
  2. Step 2: Convert to fraction form
    181,859.76/250,971.84 = 100,190.88/x
  3. Step 3: Cross multiply
    181,859.76x = 250,971.84 × 100,190.88
  4. Step 4: Simplify right side
    181,859.76x = 25,145,089,504.82
  5. Step 5: Solve for x
    x = 25,145,089,504.82/181,859.76
  6. Step 6: Final answer
    x = 138,266.37

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1.5x scale

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.