Home / 143,119.14-197,489.75-82,709.28

Finding the Fourth Proportional to 143,119.14, 197,489.75 and 82,709.28

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Solution

The fourth proportional to 143,119.14, 197,489.75 and 82,709.28 is: 114,130.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,119.14 : 197,489.75 = 82,709.28 : x
  2. Step 2: Convert to fraction form
    143,119.14/197,489.75 = 82,709.28/x
  3. Step 3: Cross multiply
    143,119.14x = 197,489.75 × 82,709.28
  4. Step 4: Simplify right side
    143,119.14x = 16,334,234,616.33
  5. Step 5: Solve for x
    x = 16,334,234,616.33/143,119.14
  6. Step 6: Final answer
    x = 114,130.33

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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.