Home / 107,764.20-161,646.30-66,234.60

Finding the Fourth Proportional to 107,764.20, 161,646.30 and 66,234.60

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Solution

The fourth proportional to 107,764.20, 161,646.30 and 66,234.60 is: 99,351.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,764.20 : 161,646.30 = 66,234.60 : x
  2. Step 2: Convert to fraction form
    107,764.20/161,646.30 = 66,234.60/x
  3. Step 3: Cross multiply
    107,764.20x = 161,646.30 × 66,234.60
  4. Step 4: Simplify right side
    107,764.20x = 10,706,578,021.98
  5. Step 5: Solve for x
    x = 10,706,578,021.98/107,764.20
  6. Step 6: Final answer
    x = 99,351.90

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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.