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Finding the Fourth Proportional to 198,123.80, 297,195.40 and 79,779.16

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Solution

The fourth proportional to 198,123.80, 297,195.40 and 79,779.16 is: 119,672.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,123.80 : 297,195.40 = 79,779.16 : x
  2. Step 2: Convert to fraction form
    198,123.80/297,195.40 = 79,779.16/x
  3. Step 3: Cross multiply
    198,123.80x = 297,195.40 × 79,779.16
  4. Step 4: Simplify right side
    198,123.80x = 23,709,999,367.86
  5. Step 5: Solve for x
    x = 23,709,999,367.86/198,123.80
  6. Step 6: Final answer
    x = 119,672.65

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