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Finding the Fourth Proportional to 198,459.60, 297,722.16 and 91,950

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Solution

The fourth proportional to 198,459.60, 297,722.16 and 91,950 is: 137,940.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,459.60 : 297,722.16 = 91,950 : x
  2. Step 2: Convert to fraction form
    198,459.60/297,722.16 = 91,950/x
  3. Step 3: Cross multiply
    198,459.60x = 297,722.16 × 91,950
  4. Step 4: Simplify right side
    198,459.60x = 27,375,552,612.00
  5. Step 5: Solve for x
    x = 27,375,552,612.00/198,459.60
  6. Step 6: Final answer
    x = 137,940.18

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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.