Home / 120,769.20-181,153.80-76,251.60

Finding the Fourth Proportional to 120,769.20, 181,153.80 and 76,251.60

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Solution

The fourth proportional to 120,769.20, 181,153.80 and 76,251.60 is: 114,377.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,769.20 : 181,153.80 = 76,251.60 : x
  2. Step 2: Convert to fraction form
    120,769.20/181,153.80 = 76,251.60/x
  3. Step 3: Cross multiply
    120,769.20x = 181,153.80 × 76,251.60
  4. Step 4: Simplify right side
    120,769.20x = 13,813,267,096.08
  5. Step 5: Solve for x
    x = 13,813,267,096.08/120,769.20
  6. Step 6: Final answer
    x = 114,377.40

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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.