Home / 199,320.40-298,974.12-80,956.72

Finding the Fourth Proportional to 199,320.40, 298,974.12 and 80,956.72

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Solution

The fourth proportional to 199,320.40, 298,974.12 and 80,956.72 is: 121,432.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,320.40 : 298,974.12 = 80,956.72 : x
  2. Step 2: Convert to fraction form
    199,320.40/298,974.12 = 80,956.72/x
  3. Step 3: Cross multiply
    199,320.40x = 298,974.12 × 80,956.72
  4. Step 4: Simplify right side
    199,320.40x = 24,203,964,120.09
  5. Step 5: Solve for x
    x = 24,203,964,120.09/199,320.40
  6. Step 6: Final answer
    x = 121,432.45

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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.