Home / 139,968,128.20-209,952,192.30-136,188,992.20

Finding the Fourth Proportional to 139,968,128.20, 209,952,192.30 and 136,188,992.20

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Solution

The fourth proportional to 139,968,128.20, 209,952,192.30 and 136,188,992.20 is: 204,283,488.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,128.20 : 209,952,192.30 = 136,188,992.20 : x
  2. Step 2: Convert to fraction form
    139,968,128.20/209,952,192.30 = 136,188,992.20/x
  3. Step 3: Cross multiply
    139,968,128.20x = 209,952,192.30 × 136,188,992.20
  4. Step 4: Simplify right side
    139,968,128.20x = 28,593,177,479,517,600
  5. Step 5: Solve for x
    x = 28,593,177,479,517,600/139,968,128.20
  6. Step 6: Final answer
    x = 204,283,488.30

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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.