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Finding the Fourth Proportional to 100,308,840.40, 150,463,260.60 and 72,957,343.60

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Solution

The fourth proportional to 100,308,840.40, 150,463,260.60 and 72,957,343.60 is: 109,436,015.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,308,840.40 : 150,463,260.60 = 72,957,343.60 : x
  2. Step 2: Convert to fraction form
    100,308,840.40/150,463,260.60 = 72,957,343.60/x
  3. Step 3: Cross multiply
    100,308,840.40x = 150,463,260.60 × 72,957,343.60
  4. Step 4: Simplify right side
    100,308,840.40x = 10,977,399,802,770,540
  5. Step 5: Solve for x
    x = 10,977,399,802,770,540/100,308,840.40
  6. Step 6: Final answer
    x = 109,436,015.40

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1.5x scale

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.