Home / 87,188.94-120,324.69-51,380.46

Finding the Fourth Proportional to 87,188.94, 120,324.69 and 51,380.46

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Solution

The fourth proportional to 87,188.94, 120,324.69 and 51,380.46 is: 70,907.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,188.94 : 120,324.69 = 51,380.46 : x
  2. Step 2: Convert to fraction form
    87,188.94/120,324.69 = 51,380.46/x
  3. Step 3: Cross multiply
    87,188.94x = 120,324.69 × 51,380.46
  4. Step 4: Simplify right side
    87,188.94x = 6,182,337,921.56
  5. Step 5: Solve for x
    x = 6,182,337,921.56/87,188.94
  6. Step 6: Final answer
    x = 70,907.36

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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.