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Finding the Fourth Proportional to 198,873.88, 274,384.08 and 112,818.64

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Solution

The fourth proportional to 198,873.88, 274,384.08 and 112,818.64 is: 155,654.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,873.88 : 274,384.08 = 112,818.64 : x
  2. Step 2: Convert to fraction form
    198,873.88/274,384.08 = 112,818.64/x
  3. Step 3: Cross multiply
    198,873.88x = 274,384.08 × 112,818.64
  4. Step 4: Simplify right side
    198,873.88x = 30,955,638,743.25
  5. Step 5: Solve for x
    x = 30,955,638,743.25/198,873.88
  6. Step 6: Final answer
    x = 155,654.62

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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.