Home / 121,882.82-168,189.62-111,844.49

Finding the Fourth Proportional to 121,882.82, 168,189.62 and 111,844.49

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Solution

The fourth proportional to 121,882.82, 168,189.62 and 111,844.49 is: 154,337.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,882.82 : 168,189.62 = 111,844.49 : x
  2. Step 2: Convert to fraction form
    121,882.82/168,189.62 = 111,844.49/x
  3. Step 3: Cross multiply
    121,882.82x = 168,189.62 × 111,844.49
  4. Step 4: Simplify right side
    121,882.82x = 18,811,080,872.02
  5. Step 5: Solve for x
    x = 18,811,080,872.02/121,882.82
  6. Step 6: Final answer
    x = 154,337.43

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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.