Home / 87,109.70-130,633.18-30,168.18

Finding the Fourth Proportional to 87,109.70, 130,633.18 and 30,168.18

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Solution

The fourth proportional to 87,109.70, 130,633.18 and 30,168.18 is: 45,241.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,109.70 : 130,633.18 = 30,168.18 : x
  2. Step 2: Convert to fraction form
    87,109.70/130,633.18 = 30,168.18/x
  3. Step 3: Cross multiply
    87,109.70x = 130,633.18 × 30,168.18
  4. Step 4: Simplify right side
    87,109.70x = 3,940,965,212.79
  5. Step 5: Solve for x
    x = 3,940,965,212.79/87,109.70
  6. Step 6: Final answer
    x = 45,241.41

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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.