Home / 221,905.78-332,876.99-72,142.65

Finding the Fourth Proportional to 221,905.78, 332,876.99 and 72,142.65

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Solution

The fourth proportional to 221,905.78, 332,876.99 and 72,142.65 is: 108,219.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,905.78 : 332,876.99 = 72,142.65 : x
  2. Step 2: Convert to fraction form
    221,905.78/332,876.99 = 72,142.65/x
  3. Step 3: Cross multiply
    221,905.78x = 332,876.99 × 72,142.65
  4. Step 4: Simplify right side
    221,905.78x = 24,014,628,362.98
  5. Step 5: Solve for x
    x = 24,014,628,362.98/221,905.78
  6. Step 6: Final answer
    x = 108,219.93

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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.