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Finding the Fourth Proportional to 199,404.72, 299,163.60 and 81,160.92

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Solution

The fourth proportional to 199,404.72, 299,163.60 and 81,160.92 is: 121,764.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,404.72 : 299,163.60 = 81,160.92 : x
  2. Step 2: Convert to fraction form
    199,404.72/299,163.60 = 81,160.92/x
  3. Step 3: Cross multiply
    199,404.72x = 299,163.60 × 81,160.92
  4. Step 4: Simplify right side
    199,404.72x = 24,280,393,006.51
  5. Step 5: Solve for x
    x = 24,280,393,006.51/199,404.72
  6. Step 6: Final answer
    x = 121,764.38

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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.