Home / 143,906.63-198,592.44-79,378.34

Finding the Fourth Proportional to 143,906.63, 198,592.44 and 79,378.34

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Solution

The fourth proportional to 143,906.63, 198,592.44 and 79,378.34 is: 109,542.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,906.63 : 198,592.44 = 79,378.34 : x
  2. Step 2: Convert to fraction form
    143,906.63/198,592.44 = 79,378.34/x
  3. Step 3: Cross multiply
    143,906.63x = 198,592.44 × 79,378.34
  4. Step 4: Simplify right side
    143,906.63x = 15,763,938,223.75
  5. Step 5: Solve for x
    x = 15,763,938,223.75/143,906.63
  6. Step 6: Final answer
    x = 109,542.82

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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.