Home / 110,408.40-165,418.20-90,579.60

Finding the Fourth Proportional to 110,408.40, 165,418.20 and 90,579.60

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Solution

The fourth proportional to 110,408.40, 165,418.20 and 90,579.60 is: 135,709.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,408.40 : 165,418.20 = 90,579.60 : x
  2. Step 2: Convert to fraction form
    110,408.40/165,418.20 = 90,579.60/x
  3. Step 3: Cross multiply
    110,408.40x = 165,418.20 × 90,579.60
  4. Step 4: Simplify right side
    110,408.40x = 14,983,514,388.72
  5. Step 5: Solve for x
    x = 14,983,514,388.72/110,408.40
  6. Step 6: Final answer
    x = 135,709.91

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1.5x scale

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.