Home / 137,067.36-205,549.20-53,916

Finding the Fourth Proportional to 137,067.36, 205,549.20 and 53,916

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Solution

The fourth proportional to 137,067.36, 205,549.20 and 53,916 is: 80,853.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,067.36 : 205,549.20 = 53,916 : x
  2. Step 2: Convert to fraction form
    137,067.36/205,549.20 = 53,916/x
  3. Step 3: Cross multiply
    137,067.36x = 205,549.20 × 53,916
  4. Step 4: Simplify right side
    137,067.36x = 11,082,390,667.20
  5. Step 5: Solve for x
    x = 11,082,390,667.20/137,067.36
  6. Step 6: Final answer
    x = 80,853.61

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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.