Home / 143,986.25-198,706.49-80,336.45

Finding the Fourth Proportional to 143,986.25, 198,706.49 and 80,336.45

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Solution

The fourth proportional to 143,986.25, 198,706.49 and 80,336.45 is: 110,867.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,986.25 : 198,706.49 = 80,336.45 : x
  2. Step 2: Convert to fraction form
    143,986.25/198,706.49 = 80,336.45/x
  3. Step 3: Cross multiply
    143,986.25x = 198,706.49 × 80,336.45
  4. Step 4: Simplify right side
    143,986.25x = 15,963,372,603.35
  5. Step 5: Solve for x
    x = 15,963,372,603.35/143,986.25
  6. Step 6: Final answer
    x = 110,867.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.