Home / 87,185.88-120,334.80-55,347.96

Finding the Fourth Proportional to 87,185.88, 120,334.80 and 55,347.96

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Solution

The fourth proportional to 87,185.88, 120,334.80 and 55,347.96 is: 76,391.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,185.88 : 120,334.80 = 55,347.96 : x
  2. Step 2: Convert to fraction form
    87,185.88/120,334.80 = 55,347.96/x
  3. Step 3: Cross multiply
    87,185.88x = 120,334.80 × 55,347.96
  4. Step 4: Simplify right side
    87,185.88x = 6,660,285,697.01
  5. Step 5: Solve for x
    x = 6,660,285,697.01/87,185.88
  6. Step 6: Final answer
    x = 76,391.79

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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.