Home / 120,115,676.55-180,173,514.83-81,568,489.35

Finding the Fourth Proportional to 120,115,676.55, 180,173,514.83 and 81,568,489.35

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Solution

The fourth proportional to 120,115,676.55, 180,173,514.83 and 81,568,489.35 is: 122,352,734.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,115,676.55 : 180,173,514.83 = 81,568,489.35 : x
  2. Step 2: Convert to fraction form
    120,115,676.55/180,173,514.83 = 81,568,489.35/x
  3. Step 3: Cross multiply
    120,115,676.55x = 180,173,514.83 × 81,568,489.35
  4. Step 4: Simplify right side
    120,115,676.55x = 14,696,481,425,155,078
  5. Step 5: Solve for x
    x = 14,696,481,425,155,078/120,115,676.55
  6. Step 6: Final answer
    x = 122,352,734.03

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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.