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Finding the Fourth Proportional to 139,968,793.20, 209,953,189.80 and 119,561,458.80

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Solution

The fourth proportional to 139,968,793.20, 209,953,189.80 and 119,561,458.80 is: 179,342,188.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,793.20 : 209,953,189.80 = 119,561,458.80 : x
  2. Step 2: Convert to fraction form
    139,968,793.20/209,953,189.80 = 119,561,458.80/x
  3. Step 3: Cross multiply
    139,968,793.20x = 209,953,189.80 × 119,561,458.80
  4. Step 4: Simplify right side
    139,968,793.20x = 25,102,309,652,201,280
  5. Step 5: Solve for x
    x = 25,102,309,652,201,280/139,968,793.20
  6. Step 6: Final answer
    x = 179,342,188.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.