Home / 120,149.28-165,794.34-66,426.96

Finding the Fourth Proportional to 120,149.28, 165,794.34 and 66,426.96

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Solution

The fourth proportional to 120,149.28, 165,794.34 and 66,426.96 is: 91,662.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,149.28 : 165,794.34 = 66,426.96 : x
  2. Step 2: Convert to fraction form
    120,149.28/165,794.34 = 66,426.96/x
  3. Step 3: Cross multiply
    120,149.28x = 165,794.34 × 66,426.96
  4. Step 4: Simplify right side
    120,149.28x = 11,013,213,991.41
  5. Step 5: Solve for x
    x = 11,013,213,991.41/120,149.28
  6. Step 6: Final answer
    x = 91,662.75

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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.