Home / 140,579.20-194,000.70-76,919.68

Finding the Fourth Proportional to 140,579.20, 194,000.70 and 76,919.68

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Solution

The fourth proportional to 140,579.20, 194,000.70 and 76,919.68 is: 106,149.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,579.20 : 194,000.70 = 76,919.68 : x
  2. Step 2: Convert to fraction form
    140,579.20/194,000.70 = 76,919.68/x
  3. Step 3: Cross multiply
    140,579.20x = 194,000.70 × 76,919.68
  4. Step 4: Simplify right side
    140,579.20x = 14,922,471,763.78
  5. Step 5: Solve for x
    x = 14,922,471,763.78/140,579.20
  6. Step 6: Final answer
    x = 106,149.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.