Home / 87,218.73-120,406.69-74,607.39

Finding the Fourth Proportional to 87,218.73, 120,406.69 and 74,607.39

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Solution

The fourth proportional to 87,218.73, 120,406.69 and 74,607.39 is: 102,996.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,218.73 : 120,406.69 = 74,607.39 : x
  2. Step 2: Convert to fraction form
    87,218.73/120,406.69 = 74,607.39/x
  3. Step 3: Cross multiply
    87,218.73x = 120,406.69 × 74,607.39
  4. Step 4: Simplify right side
    87,218.73x = 8,983,228,553.03
  5. Step 5: Solve for x
    x = 8,983,228,553.03/87,218.73
  6. Step 6: Final answer
    x = 102,996.55

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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.