Home / 120,008.40-165,610.62-66,296.90

Finding the Fourth Proportional to 120,008.40, 165,610.62 and 66,296.90

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Solution

The fourth proportional to 120,008.40, 165,610.62 and 66,296.90 is: 91,489.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,008.40 : 165,610.62 = 66,296.90 : x
  2. Step 2: Convert to fraction form
    120,008.40/165,610.62 = 66,296.90/x
  3. Step 3: Cross multiply
    120,008.40x = 165,610.62 × 66,296.90
  4. Step 4: Simplify right side
    120,008.40x = 10,979,469,885.02
  5. Step 5: Solve for x
    x = 10,979,469,885.02/120,008.40
  6. Step 6: Final answer
    x = 91,489.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.