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Finding the Fourth Proportional to 198,763.62, 274,201.65 and 118,145.94

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Solution

The fourth proportional to 198,763.62, 274,201.65 and 118,145.94 is: 162,986.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,763.62 : 274,201.65 = 118,145.94 : x
  2. Step 2: Convert to fraction form
    198,763.62/274,201.65 = 118,145.94/x
  3. Step 3: Cross multiply
    198,763.62x = 274,201.65 × 118,145.94
  4. Step 4: Simplify right side
    198,763.62x = 32,395,811,688.80
  5. Step 5: Solve for x
    x = 32,395,811,688.80/198,763.62
  6. Step 6: Final answer
    x = 162,986.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.