Home / 87,198.40-120,347.28-51,400

Finding the Fourth Proportional to 87,198.40, 120,347.28 and 51,400

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Solution

The fourth proportional to 87,198.40, 120,347.28 and 51,400 is: 70,939.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,198.40 : 120,347.28 = 51,400 : x
  2. Step 2: Convert to fraction form
    87,198.40/120,347.28 = 51,400/x
  3. Step 3: Cross multiply
    87,198.40x = 120,347.28 × 51,400
  4. Step 4: Simplify right side
    87,198.40x = 6,185,850,192
  5. Step 5: Solve for x
    x = 6,185,850,192/87,198.40
  6. Step 6: Final answer
    x = 70,939.95

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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.