Home / 139,968,135.20-209,952,202.80-131,458,080.80

Finding the Fourth Proportional to 139,968,135.20, 209,952,202.80 and 131,458,080.80

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Solution

The fourth proportional to 139,968,135.20, 209,952,202.80 and 131,458,080.80 is: 197,187,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,135.20 : 209,952,202.80 = 131,458,080.80 : x
  2. Step 2: Convert to fraction form
    139,968,135.20/209,952,202.80 = 131,458,080.80/x
  3. Step 3: Cross multiply
    139,968,135.20x = 209,952,202.80 × 131,458,080.80
  4. Step 4: Simplify right side
    139,968,135.20x = 27,599,913,639,820,388
  5. Step 5: Solve for x
    x = 27,599,913,639,820,388/139,968,135.20
  6. Step 6: Final answer
    x = 197,187,121.20

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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.