Home / 99,930.26-137,911.62-56,911.56

Finding the Fourth Proportional to 99,930.26, 137,911.62 and 56,911.56

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Solution

The fourth proportional to 99,930.26, 137,911.62 and 56,911.56 is: 78,542.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,930.26 : 137,911.62 = 56,911.56 : x
  2. Step 2: Convert to fraction form
    99,930.26/137,911.62 = 56,911.56/x
  3. Step 3: Cross multiply
    99,930.26x = 137,911.62 × 56,911.56
  4. Step 4: Simplify right side
    99,930.26x = 7,848,765,436.33
  5. Step 5: Solve for x
    x = 7,848,765,436.33/99,930.26
  6. Step 6: Final answer
    x = 78,542.43

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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.