Home / 109,760.20-164,640.30-80,235.70

Finding the Fourth Proportional to 109,760.20, 164,640.30 and 80,235.70

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Solution

The fourth proportional to 109,760.20, 164,640.30 and 80,235.70 is: 120,353.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,760.20 : 164,640.30 = 80,235.70 : x
  2. Step 2: Convert to fraction form
    109,760.20/164,640.30 = 80,235.70/x
  3. Step 3: Cross multiply
    109,760.20x = 164,640.30 × 80,235.70
  4. Step 4: Simplify right side
    109,760.20x = 13,210,029,718.71
  5. Step 5: Solve for x
    x = 13,210,029,718.71/109,760.20
  6. Step 6: Final answer
    x = 120,353.55

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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.