Home / 143,943.36-198,635.04-79,414.68

Finding the Fourth Proportional to 143,943.36, 198,635.04 and 79,414.68

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Solution

The fourth proportional to 143,943.36, 198,635.04 and 79,414.68 is: 109,588.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,943.36 : 198,635.04 = 79,414.68 : x
  2. Step 2: Convert to fraction form
    143,943.36/198,635.04 = 79,414.68/x
  3. Step 3: Cross multiply
    143,943.36x = 198,635.04 × 79,414.68
  4. Step 4: Simplify right side
    143,943.36x = 15,774,538,138.39
  5. Step 5: Solve for x
    x = 15,774,538,138.39/143,943.36
  6. Step 6: Final answer
    x = 109,588.51

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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.