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Finding the Fourth Proportional to 199,924.70, 299,902.55 and 66,805.43

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Solution

The fourth proportional to 199,924.70, 299,902.55 and 66,805.43 is: 100,213.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,924.70 : 299,902.55 = 66,805.43 : x
  2. Step 2: Convert to fraction form
    199,924.70/299,902.55 = 66,805.43/x
  3. Step 3: Cross multiply
    199,924.70x = 299,902.55 × 66,805.43
  4. Step 4: Simplify right side
    199,924.70x = 20,035,118,810.85
  5. Step 5: Solve for x
    x = 20,035,118,810.85/199,924.70
  6. Step 6: Final answer
    x = 100,213.32

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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.