Home / 143,931.52-198,625.68-79,399.28

Finding the Fourth Proportional to 143,931.52, 198,625.68 and 79,399.28

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Solution

The fourth proportional to 143,931.52, 198,625.68 and 79,399.28 is: 109,571.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,931.52 : 198,625.68 = 79,399.28 : x
  2. Step 2: Convert to fraction form
    143,931.52/198,625.68 = 79,399.28/x
  3. Step 3: Cross multiply
    143,931.52x = 198,625.68 × 79,399.28
  4. Step 4: Simplify right side
    143,931.52x = 15,770,735,981.51
  5. Step 5: Solve for x
    x = 15,770,735,981.51/143,931.52
  6. Step 6: Final answer
    x = 109,571.11

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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.