Home / 107,489.20-161,118.60-40,903.60

Finding the Fourth Proportional to 107,489.20, 161,118.60 and 40,903.60

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Solution

The fourth proportional to 107,489.20, 161,118.60 and 40,903.60 is: 61,311.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,489.20 : 161,118.60 = 40,903.60 : x
  2. Step 2: Convert to fraction form
    107,489.20/161,118.60 = 40,903.60/x
  3. Step 3: Cross multiply
    107,489.20x = 161,118.60 × 40,903.60
  4. Step 4: Simplify right side
    107,489.20x = 6,590,330,766.96
  5. Step 5: Solve for x
    x = 6,590,330,766.96/107,489.20
  6. Step 6: Final answer
    x = 61,311.56

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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.