Home / 87,161.46-120,242.82-51,334.30

Finding the Fourth Proportional to 87,161.46, 120,242.82 and 51,334.30

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Solution

The fourth proportional to 87,161.46, 120,242.82 and 51,334.30 is: 70,817.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,161.46 : 120,242.82 = 51,334.30 : x
  2. Step 2: Convert to fraction form
    87,161.46/120,242.82 = 51,334.30/x
  3. Step 3: Cross multiply
    87,161.46x = 120,242.82 × 51,334.30
  4. Step 4: Simplify right side
    87,161.46x = 6,172,580,994.73
  5. Step 5: Solve for x
    x = 6,172,580,994.73/87,161.46
  6. Step 6: Final answer
    x = 70,817.78

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1.5x scale

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.