Home / 198,428.85-273,836.91-107,790

Finding the Fourth Proportional to 198,428.85, 273,836.91 and 107,790

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Solution

The fourth proportional to 198,428.85, 273,836.91 and 107,790 is: 148,752.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,428.85 : 273,836.91 = 107,790 : x
  2. Step 2: Convert to fraction form
    198,428.85/273,836.91 = 107,790/x
  3. Step 3: Cross multiply
    198,428.85x = 273,836.91 × 107,790
  4. Step 4: Simplify right side
    198,428.85x = 29,516,880,528.90
  5. Step 5: Solve for x
    x = 29,516,880,528.90/198,428.85
  6. Step 6: Final answer
    x = 148,752.97

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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.