Home / 187,739.20-281,608.64-75,419.44

Finding the Fourth Proportional to 187,739.20, 281,608.64 and 75,419.44

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Solution

The fourth proportional to 187,739.20, 281,608.64 and 75,419.44 is: 113,129.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,739.20 : 281,608.64 = 75,419.44 : x
  2. Step 2: Convert to fraction form
    187,739.20/281,608.64 = 75,419.44/x
  3. Step 3: Cross multiply
    187,739.20x = 281,608.64 × 75,419.44
  4. Step 4: Simplify right side
    187,739.20x = 21,238,765,927.96
  5. Step 5: Solve for x
    x = 21,238,765,927.96/187,739.20
  6. Step 6: Final answer
    x = 113,129.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.