Home / 109,659.20-164,553.60-80,002.40

Finding the Fourth Proportional to 109,659.20, 164,553.60 and 80,002.40

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Solution

The fourth proportional to 109,659.20, 164,553.60 and 80,002.40 is: 120,050.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,659.20 : 164,553.60 = 80,002.40 : x
  2. Step 2: Convert to fraction form
    109,659.20/164,553.60 = 80,002.40/x
  3. Step 3: Cross multiply
    109,659.20x = 164,553.60 × 80,002.40
  4. Step 4: Simplify right side
    109,659.20x = 13,164,682,928.64
  5. Step 5: Solve for x
    x = 13,164,682,928.64/109,659.20
  6. Step 6: Final answer
    x = 120,050.88

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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.