Home / 87,112.29-120,200.38-51,309.43

Finding the Fourth Proportional to 87,112.29, 120,200.38 and 51,309.43

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Solution

The fourth proportional to 87,112.29, 120,200.38 and 51,309.43 is: 70,798.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,112.29 : 120,200.38 = 51,309.43 : x
  2. Step 2: Convert to fraction form
    87,112.29/120,200.38 = 51,309.43/x
  3. Step 3: Cross multiply
    87,112.29x = 120,200.38 × 51,309.43
  4. Step 4: Simplify right side
    87,112.29x = 6,167,412,618.05
  5. Step 5: Solve for x
    x = 6,167,412,618.05/87,112.29
  6. Step 6: Final answer
    x = 70,798.42

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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.