Home / 193,540,399.20-290,310,598.80-78,580,015.20

Finding the Fourth Proportional to 193,540,399.20, 290,310,598.80 and 78,580,015.20

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Solution

The fourth proportional to 193,540,399.20, 290,310,598.80 and 78,580,015.20 is: 117,870,022.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,540,399.20 : 290,310,598.80 = 78,580,015.20 : x
  2. Step 2: Convert to fraction form
    193,540,399.20/290,310,598.80 = 78,580,015.20/x
  3. Step 3: Cross multiply
    193,540,399.20x = 290,310,598.80 × 78,580,015.20
  4. Step 4: Simplify right side
    193,540,399.20x = 22,812,611,266,425,104
  5. Step 5: Solve for x
    x = 22,812,611,266,425,104/193,540,399.20
  6. Step 6: Final answer
    x = 117,870,022.80

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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.