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Finding the Fourth Proportional to 122,206.80, 183,310.20 and 80,216.40

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Solution

The fourth proportional to 122,206.80, 183,310.20 and 80,216.40 is: 120,324.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,206.80 : 183,310.20 = 80,216.40 : x
  2. Step 2: Convert to fraction form
    122,206.80/183,310.20 = 80,216.40/x
  3. Step 3: Cross multiply
    122,206.80x = 183,310.20 × 80,216.40
  4. Step 4: Simplify right side
    122,206.80x = 14,704,484,327.28
  5. Step 5: Solve for x
    x = 14,704,484,327.28/122,206.80
  6. Step 6: Final answer
    x = 120,324.60

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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.