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Finding the Fourth Proportional to 162,805.20, 244,207.80 and 99,819.60

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Solution

The fourth proportional to 162,805.20, 244,207.80 and 99,819.60 is: 149,729.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,805.20 : 244,207.80 = 99,819.60 : x
  2. Step 2: Convert to fraction form
    162,805.20/244,207.80 = 99,819.60/x
  3. Step 3: Cross multiply
    162,805.20x = 244,207.80 × 99,819.60
  4. Step 4: Simplify right side
    162,805.20x = 24,376,724,912.88
  5. Step 5: Solve for x
    x = 24,376,724,912.88/162,805.20
  6. Step 6: Final answer
    x = 149,729.40

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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.