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Finding the Fourth Proportional to 199,956.30, 300,010.21 and 120,050.07

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Solution

The fourth proportional to 199,956.30, 300,010.21 and 120,050.07 is: 180,120.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,956.30 : 300,010.21 = 120,050.07 : x
  2. Step 2: Convert to fraction form
    199,956.30/300,010.21 = 120,050.07/x
  3. Step 3: Cross multiply
    199,956.30x = 300,010.21 × 120,050.07
  4. Step 4: Simplify right side
    199,956.30x = 36,016,246,711.21
  5. Step 5: Solve for x
    x = 36,016,246,711.21/199,956.30
  6. Step 6: Final answer
    x = 180,120.59

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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.