Home / 107,418.72-161,116.74-28,540.92

Finding the Fourth Proportional to 107,418.72, 161,116.74 and 28,540.92

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Solution

The fourth proportional to 107,418.72, 161,116.74 and 28,540.92 is: 42,808.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,418.72 : 161,116.74 = 28,540.92 : x
  2. Step 2: Convert to fraction form
    107,418.72/161,116.74 = 28,540.92/x
  3. Step 3: Cross multiply
    107,418.72x = 161,116.74 × 28,540.92
  4. Step 4: Simplify right side
    107,418.72x = 4,598,419,987.00
  5. Step 5: Solve for x
    x = 4,598,419,987.00/107,418.72
  6. Step 6: Final answer
    x = 42,808.37

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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.