Home / 149,321,863.60-206,064,128.76-80,644,231.60

Finding the Fourth Proportional to 149,321,863.60, 206,064,128.76 and 80,644,231.60

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Solution

The fourth proportional to 149,321,863.60, 206,064,128.76 and 80,644,231.60 is: 111,289,016.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,321,863.60 : 206,064,128.76 = 80,644,231.60 : x
  2. Step 2: Convert to fraction form
    149,321,863.60/206,064,128.76 = 80,644,231.60/x
  3. Step 3: Cross multiply
    149,321,863.60x = 206,064,128.76 × 80,644,231.60
  4. Step 4: Simplify right side
    149,321,863.60x = 16,617,883,324,173,658
  5. Step 5: Solve for x
    x = 16,617,883,324,173,658/149,321,863.60
  6. Step 6: Final answer
    x = 111,289,016.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.