Home / 133,034,997.20-199,552,495.80-78,615,438.80

Finding the Fourth Proportional to 133,034,997.20, 199,552,495.80 and 78,615,438.80

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Solution

The fourth proportional to 133,034,997.20, 199,552,495.80 and 78,615,438.80 is: 117,923,158.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,034,997.20 : 199,552,495.80 = 78,615,438.80 : x
  2. Step 2: Convert to fraction form
    133,034,997.20/199,552,495.80 = 78,615,438.80/x
  3. Step 3: Cross multiply
    133,034,997.20x = 199,552,495.80 × 78,615,438.80
  4. Step 4: Simplify right side
    133,034,997.20x = 15,687,907,020,952,158
  5. Step 5: Solve for x
    x = 15,687,907,020,952,158/133,034,997.20
  6. Step 6: Final answer
    x = 117,923,158.20

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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.