Home / 168,081.72-231,949.64-91,601.40

Finding the Fourth Proportional to 168,081.72, 231,949.64 and 91,601.40

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Solution

The fourth proportional to 168,081.72, 231,949.64 and 91,601.40 is: 126,408.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,081.72 : 231,949.64 = 91,601.40 : x
  2. Step 2: Convert to fraction form
    168,081.72/231,949.64 = 91,601.40/x
  3. Step 3: Cross multiply
    168,081.72x = 231,949.64 × 91,601.40
  4. Step 4: Simplify right side
    168,081.72x = 21,246,911,753.50
  5. Step 5: Solve for x
    x = 21,246,911,753.50/168,081.72
  6. Step 6: Final answer
    x = 126,408.22

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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.