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Finding the Fourth Proportional to 198,712.68, 274,222.14 and 112,687.92

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Solution

The fourth proportional to 198,712.68, 274,222.14 and 112,687.92 is: 155,508.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,712.68 : 274,222.14 = 112,687.92 : x
  2. Step 2: Convert to fraction form
    198,712.68/274,222.14 = 112,687.92/x
  3. Step 3: Cross multiply
    198,712.68x = 274,222.14 × 112,687.92
  4. Step 4: Simplify right side
    198,712.68x = 30,901,522,574.55
  5. Step 5: Solve for x
    x = 30,901,522,574.55/198,712.68
  6. Step 6: Final answer
    x = 155,508.56

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1.5x scale

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.