Home / 198,426.30-273,830.79-107,783.78

Finding the Fourth Proportional to 198,426.30, 273,830.79 and 107,783.78

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Solution

The fourth proportional to 198,426.30, 273,830.79 and 107,783.78 is: 148,742.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,426.30 : 273,830.79 = 107,783.78 : x
  2. Step 2: Convert to fraction form
    198,426.30/273,830.79 = 107,783.78/x
  3. Step 3: Cross multiply
    198,426.30x = 273,830.79 × 107,783.78
  4. Step 4: Simplify right side
    198,426.30x = 29,514,516,257.43
  5. Step 5: Solve for x
    x = 29,514,516,257.43/198,426.30
  6. Step 6: Final answer
    x = 148,742.97

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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.