Home / 99,844.32-137,623.92-86,890.44

Finding the Fourth Proportional to 99,844.32, 137,623.92 and 86,890.44

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Solution

The fourth proportional to 99,844.32, 137,623.92 and 86,890.44 is: 119,768.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,844.32 : 137,623.92 = 86,890.44 : x
  2. Step 2: Convert to fraction form
    99,844.32/137,623.92 = 86,890.44/x
  3. Step 3: Cross multiply
    99,844.32x = 137,623.92 × 86,890.44
  4. Step 4: Simplify right side
    99,844.32x = 11,958,202,963.32
  5. Step 5: Solve for x
    x = 11,958,202,963.32/99,844.32
  6. Step 6: Final answer
    x = 119,768.49

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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.