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Finding the Fourth Proportional to 199,998.72, 275,986.92 and 109,337.85

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Solution

The fourth proportional to 199,998.72, 275,986.92 and 109,337.85 is: 150,880.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,998.72 : 275,986.92 = 109,337.85 : x
  2. Step 2: Convert to fraction form
    199,998.72/275,986.92 = 109,337.85/x
  3. Step 3: Cross multiply
    199,998.72x = 275,986.92 × 109,337.85
  4. Step 4: Simplify right side
    199,998.72x = 30,175,816,460.92
  5. Step 5: Solve for x
    x = 30,175,816,460.92/199,998.72
  6. Step 6: Final answer
    x = 150,880.05

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1.5x scale

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.