Home / 102,966.20-154,449.30-80,847.80

Finding the Fourth Proportional to 102,966.20, 154,449.30 and 80,847.80

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Solution

The fourth proportional to 102,966.20, 154,449.30 and 80,847.80 is: 121,271.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,966.20 : 154,449.30 = 80,847.80 : x
  2. Step 2: Convert to fraction form
    102,966.20/154,449.30 = 80,847.80/x
  3. Step 3: Cross multiply
    102,966.20x = 154,449.30 × 80,847.80
  4. Step 4: Simplify right side
    102,966.20x = 12,486,886,116.54
  5. Step 5: Solve for x
    x = 12,486,886,116.54/102,966.20
  6. Step 6: Final answer
    x = 121,271.70

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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.