Home / 139,511.23-192,513.12-77,423.29

Finding the Fourth Proportional to 139,511.23, 192,513.12 and 77,423.29

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Solution

The fourth proportional to 139,511.23, 192,513.12 and 77,423.29 is: 106,837.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,511.23 : 192,513.12 = 77,423.29 : x
  2. Step 2: Convert to fraction form
    139,511.23/192,513.12 = 77,423.29/x
  3. Step 3: Cross multiply
    139,511.23x = 192,513.12 × 77,423.29
  4. Step 4: Simplify right side
    139,511.23x = 14,904,999,118.56
  5. Step 5: Solve for x
    x = 14,904,999,118.56/139,511.23
  6. Step 6: Final answer
    x = 106,837.27

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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.