Home / 143,324-197,785.68-79,667.36

Finding the Fourth Proportional to 143,324, 197,785.68 and 79,667.36

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Solution

The fourth proportional to 143,324, 197,785.68 and 79,667.36 is: 109,940.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,324 : 197,785.68 = 79,667.36 : x
  2. Step 2: Convert to fraction form
    143,324/197,785.68 = 79,667.36/x
  3. Step 3: Cross multiply
    143,324x = 197,785.68 × 79,667.36
  4. Step 4: Simplify right side
    143,324x = 15,757,062,971.40
  5. Step 5: Solve for x
    x = 15,757,062,971.40/143,324
  6. Step 6: Final answer
    x = 109,940.16

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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.