Home / 109,408.08-150,991.44-61,665.92

Finding the Fourth Proportional to 109,408.08, 150,991.44 and 61,665.92

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Solution

The fourth proportional to 109,408.08, 150,991.44 and 61,665.92 is: 85,103.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,408.08 : 150,991.44 = 61,665.92 : x
  2. Step 2: Convert to fraction form
    109,408.08/150,991.44 = 61,665.92/x
  3. Step 3: Cross multiply
    109,408.08x = 150,991.44 × 61,665.92
  4. Step 4: Simplify right side
    109,408.08x = 9,311,026,059.72
  5. Step 5: Solve for x
    x = 9,311,026,059.72/109,408.08
  6. Step 6: Final answer
    x = 85,103.64

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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.