Home / 107,675.20-161,685.60-81,409.60

Finding the Fourth Proportional to 107,675.20, 161,685.60 and 81,409.60

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Solution

The fourth proportional to 107,675.20, 161,685.60 and 81,409.60 is: 122,245.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,675.20 : 161,685.60 = 81,409.60 : x
  2. Step 2: Convert to fraction form
    107,675.20/161,685.60 = 81,409.60/x
  3. Step 3: Cross multiply
    107,675.20x = 161,685.60 × 81,409.60
  4. Step 4: Simplify right side
    107,675.20x = 13,162,760,021.76
  5. Step 5: Solve for x
    x = 13,162,760,021.76/107,675.20
  6. Step 6: Final answer
    x = 122,245.05

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1.5x scale

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.