Home / 155,982.20-215,257.50-87,998.94

Finding the Fourth Proportional to 155,982.20, 215,257.50 and 87,998.94

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Solution

The fourth proportional to 155,982.20, 215,257.50 and 87,998.94 is: 121,439.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,982.20 : 215,257.50 = 87,998.94 : x
  2. Step 2: Convert to fraction form
    155,982.20/215,257.50 = 87,998.94/x
  3. Step 3: Cross multiply
    155,982.20x = 215,257.50 × 87,998.94
  4. Step 4: Simplify right side
    155,982.20x = 18,942,431,827.05
  5. Step 5: Solve for x
    x = 18,942,431,827.05/155,982.20
  6. Step 6: Final answer
    x = 121,439.71

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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.