Home / 87,102.54-120,208.39-51,299.53

Finding the Fourth Proportional to 87,102.54, 120,208.39 and 51,299.53

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Solution

The fourth proportional to 87,102.54, 120,208.39 and 51,299.53 is: 70,797.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,102.54 : 120,208.39 = 51,299.53 : x
  2. Step 2: Convert to fraction form
    87,102.54/120,208.39 = 51,299.53/x
  3. Step 3: Cross multiply
    87,102.54x = 120,208.39 × 51,299.53
  4. Step 4: Simplify right side
    87,102.54x = 6,166,633,480.29
  5. Step 5: Solve for x
    x = 6,166,633,480.29/87,102.54
  6. Step 6: Final answer
    x = 70,797.40

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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.