Home / 87,191.07-120,327.62-51,382.59

Finding the Fourth Proportional to 87,191.07, 120,327.62 and 51,382.59

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Solution

The fourth proportional to 87,191.07, 120,327.62 and 51,382.59 is: 70,910.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,191.07 : 120,327.62 = 51,382.59 : x
  2. Step 2: Convert to fraction form
    87,191.07/120,327.62 = 51,382.59/x
  3. Step 3: Cross multiply
    87,191.07x = 120,327.62 × 51,382.59
  4. Step 4: Simplify right side
    87,191.07x = 6,182,744,764.14
  5. Step 5: Solve for x
    x = 6,182,744,764.14/87,191.07
  6. Step 6: Final answer
    x = 70,910.30

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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.