Home / 87,333.33-120,243.69-79,351.68

Finding the Fourth Proportional to 87,333.33, 120,243.69 and 79,351.68

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Solution

The fourth proportional to 87,333.33, 120,243.69 and 79,351.68 is: 109,254.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,333.33 : 120,243.69 = 79,351.68 : x
  2. Step 2: Convert to fraction form
    87,333.33/120,243.69 = 79,351.68/x
  3. Step 3: Cross multiply
    87,333.33x = 120,243.69 × 79,351.68
  4. Step 4: Simplify right side
    87,333.33x = 9,541,538,810.90
  5. Step 5: Solve for x
    x = 9,541,538,810.90/87,333.33
  6. Step 6: Final answer
    x = 109,254.27

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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.