Home / 168,103.77-231,977.28-91,621.36

Finding the Fourth Proportional to 168,103.77, 231,977.28 and 91,621.36

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Solution

The fourth proportional to 168,103.77, 231,977.28 and 91,621.36 is: 126,434.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,103.77 : 231,977.28 = 91,621.36 : x
  2. Step 2: Convert to fraction form
    168,103.77/231,977.28 = 91,621.36/x
  3. Step 3: Cross multiply
    168,103.77x = 231,977.28 × 91,621.36
  4. Step 4: Simplify right side
    168,103.77x = 21,254,073,882.70
  5. Step 5: Solve for x
    x = 21,254,073,882.70/168,103.77
  6. Step 6: Final answer
    x = 126,434.25

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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.