Home / 107,814.60-161,721.90-80,166.60

Finding the Fourth Proportional to 107,814.60, 161,721.90 and 80,166.60

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Solution

The fourth proportional to 107,814.60, 161,721.90 and 80,166.60 is: 120,249.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,814.60 : 161,721.90 = 80,166.60 : x
  2. Step 2: Convert to fraction form
    107,814.60/161,721.90 = 80,166.60/x
  3. Step 3: Cross multiply
    107,814.60x = 161,721.90 × 80,166.60
  4. Step 4: Simplify right side
    107,814.60x = 12,964,694,868.54
  5. Step 5: Solve for x
    x = 12,964,694,868.54/107,814.60
  6. Step 6: Final answer
    x = 120,249.90

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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.