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Finding the Fourth Proportional to 198,187.68, 297,270.90 and 70,095.09

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Solution

The fourth proportional to 198,187.68, 297,270.90 and 70,095.09 is: 105,138.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,187.68 : 297,270.90 = 70,095.09 : x
  2. Step 2: Convert to fraction form
    198,187.68/297,270.90 = 70,095.09/x
  3. Step 3: Cross multiply
    198,187.68x = 297,270.90 × 70,095.09
  4. Step 4: Simplify right side
    198,187.68x = 20,837,230,489.88
  5. Step 5: Solve for x
    x = 20,837,230,489.88/198,187.68
  6. Step 6: Final answer
    x = 105,138.88

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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.