Home / 87,180.54-120,278.20-56,983.30

Finding the Fourth Proportional to 87,180.54, 120,278.20 and 56,983.30

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Solution

The fourth proportional to 87,180.54, 120,278.20 and 56,983.30 is: 78,616.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,180.54 : 120,278.20 = 56,983.30 : x
  2. Step 2: Convert to fraction form
    87,180.54/120,278.20 = 56,983.30/x
  3. Step 3: Cross multiply
    87,180.54x = 120,278.20 × 56,983.30
  4. Step 4: Simplify right side
    87,180.54x = 6,853,848,754.06
  5. Step 5: Solve for x
    x = 6,853,848,754.06/87,180.54
  6. Step 6: Final answer
    x = 78,616.73

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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.