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Finding the Fourth Proportional to 199,818.74, 299,533.30 and 79,839.92

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Solution

The fourth proportional to 199,818.74, 299,533.30 and 79,839.92 is: 119,682.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,818.74 : 299,533.30 = 79,839.92 : x
  2. Step 2: Convert to fraction form
    199,818.74/299,533.30 = 79,839.92/x
  3. Step 3: Cross multiply
    199,818.74x = 299,533.30 × 79,839.92
  4. Step 4: Simplify right side
    199,818.74x = 23,914,714,709.34
  5. Step 5: Solve for x
    x = 23,914,714,709.34/199,818.74
  6. Step 6: Final answer
    x = 119,682.04

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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.