Home / 120,108,408.21-165,745,161.23-65,103,083.73

Finding the Fourth Proportional to 120,108,408.21, 165,745,161.23 and 65,103,083.73

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Solution

The fourth proportional to 120,108,408.21, 165,745,161.23 and 65,103,083.73 is: 89,839,847.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,108,408.21 : 165,745,161.23 = 65,103,083.73 : x
  2. Step 2: Convert to fraction form
    120,108,408.21/165,745,161.23 = 65,103,083.73/x
  3. Step 3: Cross multiply
    120,108,408.21x = 165,745,161.23 × 65,103,083.73
  4. Step 4: Simplify right side
    120,108,408.21x = 10,790,521,109,073,524
  5. Step 5: Solve for x
    x = 10,790,521,109,073,524/120,108,408.21
  6. Step 6: Final answer
    x = 89,839,847.77

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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.