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Finding the Fourth Proportional to 199,910.80, 299,866.20 and 106,598.80

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Solution

The fourth proportional to 199,910.80, 299,866.20 and 106,598.80 is: 159,898.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,910.80 : 299,866.20 = 106,598.80 : x
  2. Step 2: Convert to fraction form
    199,910.80/299,866.20 = 106,598.80/x
  3. Step 3: Cross multiply
    199,910.80x = 299,866.20 × 106,598.80
  4. Step 4: Simplify right side
    199,910.80x = 31,965,377,080.56
  5. Step 5: Solve for x
    x = 31,965,377,080.56/199,910.80
  6. Step 6: Final answer
    x = 159,898.20

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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.