Home / 80,108.28-120,161.64-56,317.68

Finding the Fourth Proportional to 80,108.28, 120,161.64 and 56,317.68

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Solution

The fourth proportional to 80,108.28, 120,161.64 and 56,317.68 is: 84,475.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,108.28 : 120,161.64 = 56,317.68 : x
  2. Step 2: Convert to fraction form
    80,108.28/120,161.64 = 56,317.68/x
  3. Step 3: Cross multiply
    80,108.28x = 120,161.64 × 56,317.68
  4. Step 4: Simplify right side
    80,108.28x = 6,767,224,789.80
  5. Step 5: Solve for x
    x = 6,767,224,789.80/80,108.28
  6. Step 6: Final answer
    x = 84,475.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.