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Finding the Fourth Proportional to 125,401.78, 188,108.82 and 50,511.81

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Solution

The fourth proportional to 125,401.78, 188,108.82 and 50,511.81 is: 75,770.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,401.78 : 188,108.82 = 50,511.81 : x
  2. Step 2: Convert to fraction form
    125,401.78/188,108.82 = 50,511.81/x
  3. Step 3: Cross multiply
    125,401.78x = 188,108.82 × 50,511.81
  4. Step 4: Simplify right side
    125,401.78x = 9,501,715,782.06
  5. Step 5: Solve for x
    x = 9,501,715,782.06/125,401.78
  6. Step 6: Final answer
    x = 75,770.19

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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.