Home / 171,072,138.70-256,608,208.05-80,204,913.10

Finding the Fourth Proportional to 171,072,138.70, 256,608,208.05 and 80,204,913.10

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Solution

The fourth proportional to 171,072,138.70, 256,608,208.05 and 80,204,913.10 is: 120,307,369.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,072,138.70 : 256,608,208.05 = 80,204,913.10 : x
  2. Step 2: Convert to fraction form
    171,072,138.70/256,608,208.05 = 80,204,913.10/x
  3. Step 3: Cross multiply
    171,072,138.70x = 256,608,208.05 × 80,204,913.10
  4. Step 4: Simplify right side
    171,072,138.70x = 20,581,239,027,396,968
  5. Step 5: Solve for x
    x = 20,581,239,027,396,968/171,072,138.70
  6. Step 6: Final answer
    x = 120,307,369.65

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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.