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Finding the Fourth Proportional to 100,405,062.40, 150,607,593.60 and 69,794,060.80

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Solution

The fourth proportional to 100,405,062.40, 150,607,593.60 and 69,794,060.80 is: 104,691,091.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,405,062.40 : 150,607,593.60 = 69,794,060.80 : x
  2. Step 2: Convert to fraction form
    100,405,062.40/150,607,593.60 = 69,794,060.80/x
  3. Step 3: Cross multiply
    100,405,062.40x = 150,607,593.60 × 69,794,060.80
  4. Step 4: Simplify right side
    100,405,062.40x = 10,511,515,544,660,090
  5. Step 5: Solve for x
    x = 10,511,515,544,660,090/100,405,062.40
  6. Step 6: Final answer
    x = 104,691,091.20

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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.