Home / 198,420.38-273,823.08-107,778.11

Finding the Fourth Proportional to 198,420.38, 273,823.08 and 107,778.11

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Solution

The fourth proportional to 198,420.38, 273,823.08 and 107,778.11 is: 148,735.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,420.38 : 273,823.08 = 107,778.11 : x
  2. Step 2: Convert to fraction form
    198,420.38/273,823.08 = 107,778.11/x
  3. Step 3: Cross multiply
    198,420.38x = 273,823.08 × 107,778.11
  4. Step 4: Simplify right side
    198,420.38x = 29,512,134,036.78
  5. Step 5: Solve for x
    x = 29,512,134,036.78/198,420.38
  6. Step 6: Final answer
    x = 148,735.40

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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.