Home / 120,579.20-166,401.60-66,867.20

Finding the Fourth Proportional to 120,579.20, 166,401.60 and 66,867.20

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Solution

The fourth proportional to 120,579.20, 166,401.60 and 66,867.20 is: 92,278.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,579.20 : 166,401.60 = 66,867.20 : x
  2. Step 2: Convert to fraction form
    120,579.20/166,401.60 = 66,867.20/x
  3. Step 3: Cross multiply
    120,579.20x = 166,401.60 × 66,867.20
  4. Step 4: Simplify right side
    120,579.20x = 11,126,809,067.52
  5. Step 5: Solve for x
    x = 11,126,809,067.52/120,579.20
  6. Step 6: Final answer
    x = 92,278.01

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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.