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Finding the Fourth Proportional to 133,590,652.20, 200,385,978.30 and 79,842,940.20

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Solution

The fourth proportional to 133,590,652.20, 200,385,978.30 and 79,842,940.20 is: 119,764,410.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,590,652.20 : 200,385,978.30 = 79,842,940.20 : x
  2. Step 2: Convert to fraction form
    133,590,652.20/200,385,978.30 = 79,842,940.20/x
  3. Step 3: Cross multiply
    133,590,652.20x = 200,385,978.30 × 79,842,940.20
  4. Step 4: Simplify right side
    133,590,652.20x = 15,999,405,682,325,400
  5. Step 5: Solve for x
    x = 15,999,405,682,325,400/133,590,652.20
  6. Step 6: Final answer
    x = 119,764,410.30

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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.