Home / 87,187.20-119,940.80-76,383.44

Finding the Fourth Proportional to 87,187.20, 119,940.80 and 76,383.44

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Solution

The fourth proportional to 87,187.20, 119,940.80 and 76,383.44 is: 105,078.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,187.20 : 119,940.80 = 76,383.44 : x
  2. Step 2: Convert to fraction form
    87,187.20/119,940.80 = 76,383.44/x
  3. Step 3: Cross multiply
    87,187.20x = 119,940.80 × 76,383.44
  4. Step 4: Simplify right side
    87,187.20x = 9,161,490,900.35
  5. Step 5: Solve for x
    x = 9,161,490,900.35/87,187.20
  6. Step 6: Final answer
    x = 105,078.39

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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.