Home / 143,000.73-197,369.73-82,581.21

Finding the Fourth Proportional to 143,000.73, 197,369.73 and 82,581.21

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Solution

The fourth proportional to 143,000.73, 197,369.73 and 82,581.21 is: 113,978.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,000.73 : 197,369.73 = 82,581.21 : x
  2. Step 2: Convert to fraction form
    143,000.73/197,369.73 = 82,581.21/x
  3. Step 3: Cross multiply
    143,000.73x = 197,369.73 × 82,581.21
  4. Step 4: Simplify right side
    143,000.73x = 16,299,031,120.77
  5. Step 5: Solve for x
    x = 16,299,031,120.77/143,000.73
  6. Step 6: Final answer
    x = 113,978.66

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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.