Home / 143,556.27-198,063.06-81,456.57

Finding the Fourth Proportional to 143,556.27, 198,063.06 and 81,456.57

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Solution

The fourth proportional to 143,556.27, 198,063.06 and 81,456.57 is: 112,384.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,556.27 : 198,063.06 = 81,456.57 : x
  2. Step 2: Convert to fraction form
    143,556.27/198,063.06 = 81,456.57/x
  3. Step 3: Cross multiply
    143,556.27x = 198,063.06 × 81,456.57
  4. Step 4: Simplify right side
    143,556.27x = 16,133,537,511.30
  5. Step 5: Solve for x
    x = 16,133,537,511.30/143,556.27
  6. Step 6: Final answer
    x = 112,384.76

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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.