Home / 219,163.29-328,754.30-86,072.39

Finding the Fourth Proportional to 219,163.29, 328,754.30 and 86,072.39

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Solution

The fourth proportional to 219,163.29, 328,754.30 and 86,072.39 is: 129,112.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,163.29 : 328,754.30 = 86,072.39 : x
  2. Step 2: Convert to fraction form
    219,163.29/328,754.30 = 86,072.39/x
  3. Step 3: Cross multiply
    219,163.29x = 328,754.30 × 86,072.39
  4. Step 4: Simplify right side
    219,163.29x = 28,296,668,715.30
  5. Step 5: Solve for x
    x = 28,296,668,715.30/219,163.29
  6. Step 6: Final answer
    x = 129,112.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.