Home / 142,239,940.20-213,359,910.30-139,972,458.60

Finding the Fourth Proportional to 142,239,940.20, 213,359,910.30 and 139,972,458.60

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Solution

The fourth proportional to 142,239,940.20, 213,359,910.30 and 139,972,458.60 is: 209,958,687.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,239,940.20 : 213,359,910.30 = 139,972,458.60 : x
  2. Step 2: Convert to fraction form
    142,239,940.20/213,359,910.30 = 139,972,458.60/x
  3. Step 3: Cross multiply
    142,239,940.20x = 213,359,910.30 × 139,972,458.60
  4. Step 4: Simplify right side
    142,239,940.20x = 29,864,511,211,366,464
  5. Step 5: Solve for x
    x = 29,864,511,211,366,464/142,239,940.20
  6. Step 6: Final answer
    x = 209,958,687.90

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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.