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Finding the Fourth Proportional to 199,653.66, 299,397.87 and 81,244.62

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Solution

The fourth proportional to 199,653.66, 299,397.87 and 81,244.62 is: 121,833.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,653.66 : 299,397.87 = 81,244.62 : x
  2. Step 2: Convert to fraction form
    199,653.66/299,397.87 = 81,244.62/x
  3. Step 3: Cross multiply
    199,653.66x = 299,397.87 × 81,244.62
  4. Step 4: Simplify right side
    199,653.66x = 24,324,466,176.96
  5. Step 5: Solve for x
    x = 24,324,466,176.96/199,653.66
  6. Step 6: Final answer
    x = 121,833.31

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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.