Home / 209,976.71-315,027.90-67,844.32

Finding the Fourth Proportional to 209,976.71, 315,027.90 and 67,844.32

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Solution

The fourth proportional to 209,976.71, 315,027.90 and 67,844.32 is: 101,786.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,976.71 : 315,027.90 = 67,844.32 : x
  2. Step 2: Convert to fraction form
    209,976.71/315,027.90 = 67,844.32/x
  3. Step 3: Cross multiply
    209,976.71x = 315,027.90 × 67,844.32
  4. Step 4: Simplify right side
    209,976.71x = 21,372,852,868.96
  5. Step 5: Solve for x
    x = 21,372,852,868.96/209,976.71
  6. Step 6: Final answer
    x = 101,786.78

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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.