Home / 143,122.75-197,525.06-81,874.56

Finding the Fourth Proportional to 143,122.75, 197,525.06 and 81,874.56

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Solution

The fourth proportional to 143,122.75, 197,525.06 and 81,874.56 is: 112,995.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,122.75 : 197,525.06 = 81,874.56 : x
  2. Step 2: Convert to fraction form
    143,122.75/197,525.06 = 81,874.56/x
  3. Step 3: Cross multiply
    143,122.75x = 197,525.06 × 81,874.56
  4. Step 4: Simplify right side
    143,122.75x = 16,172,276,951.27
  5. Step 5: Solve for x
    x = 16,172,276,951.27/143,122.75
  6. Step 6: Final answer
    x = 112,995.85

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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.