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Finding the Fourth Proportional to 199,515.52, 299,098.08 and 81,286.32

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Solution

The fourth proportional to 199,515.52, 299,098.08 and 81,286.32 is: 121,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,515.52 : 299,098.08 = 81,286.32 : x
  2. Step 2: Convert to fraction form
    199,515.52/299,098.08 = 81,286.32/x
  3. Step 3: Cross multiply
    199,515.52x = 299,098.08 × 81,286.32
  4. Step 4: Simplify right side
    199,515.52x = 24,312,582,242.27
  5. Step 5: Solve for x
    x = 24,312,582,242.27/199,515.52
  6. Step 6: Final answer
    x = 121,858.10

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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.