Home / 107,840.20-161,760.30-66,310.60

Finding the Fourth Proportional to 107,840.20, 161,760.30 and 66,310.60

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Solution

The fourth proportional to 107,840.20, 161,760.30 and 66,310.60 is: 99,465.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,840.20 : 161,760.30 = 66,310.60 : x
  2. Step 2: Convert to fraction form
    107,840.20/161,760.30 = 66,310.60/x
  3. Step 3: Cross multiply
    107,840.20x = 161,760.30 × 66,310.60
  4. Step 4: Simplify right side
    107,840.20x = 10,726,422,549.18
  5. Step 5: Solve for x
    x = 10,726,422,549.18/107,840.20
  6. Step 6: Final answer
    x = 99,465.90

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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.