Home / 120,770.20-181,155.30-76,252.60

Finding the Fourth Proportional to 120,770.20, 181,155.30 and 76,252.60

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Solution

The fourth proportional to 120,770.20, 181,155.30 and 76,252.60 is: 114,378.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,770.20 : 181,155.30 = 76,252.60 : x
  2. Step 2: Convert to fraction form
    120,770.20/181,155.30 = 76,252.60/x
  3. Step 3: Cross multiply
    120,770.20x = 181,155.30 × 76,252.60
  4. Step 4: Simplify right side
    120,770.20x = 13,813,562,628.78
  5. Step 5: Solve for x
    x = 13,813,562,628.78/120,770.20
  6. Step 6: Final answer
    x = 114,378.90

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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.