Home / 107,631.40-161,063.10-68,207.40

Finding the Fourth Proportional to 107,631.40, 161,063.10 and 68,207.40

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Solution

The fourth proportional to 107,631.40, 161,063.10 and 68,207.40 is: 102,067.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,631.40 : 161,063.10 = 68,207.40 : x
  2. Step 2: Convert to fraction form
    107,631.40/161,063.10 = 68,207.40/x
  3. Step 3: Cross multiply
    107,631.40x = 161,063.10 × 68,207.40
  4. Step 4: Simplify right side
    107,631.40x = 10,985,695,286.94
  5. Step 5: Solve for x
    x = 10,985,695,286.94/107,631.40
  6. Step 6: Final answer
    x = 102,067.75

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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.