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Finding the Fourth Proportional to 199,080.08, 298,664.42 and 72,720.08

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Solution

The fourth proportional to 199,080.08, 298,664.42 and 72,720.08 is: 109,096.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,080.08 : 298,664.42 = 72,720.08 : x
  2. Step 2: Convert to fraction form
    199,080.08/298,664.42 = 72,720.08/x
  3. Step 3: Cross multiply
    199,080.08x = 298,664.42 × 72,720.08
  4. Step 4: Simplify right side
    199,080.08x = 21,718,899,778.62
  5. Step 5: Solve for x
    x = 21,718,899,778.62/199,080.08
  6. Step 6: Final answer
    x = 109,096.30

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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.