Home / 220,161.18-330,137.69-85,288.43

Finding the Fourth Proportional to 220,161.18, 330,137.69 and 85,288.43

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Solution

The fourth proportional to 220,161.18, 330,137.69 and 85,288.43 is: 127,892.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,161.18 : 330,137.69 = 85,288.43 : x
  2. Step 2: Convert to fraction form
    220,161.18/330,137.69 = 85,288.43/x
  3. Step 3: Cross multiply
    220,161.18x = 330,137.69 × 85,288.43
  4. Step 4: Simplify right side
    220,161.18x = 28,156,925,263.93
  5. Step 5: Solve for x
    x = 28,156,925,263.93/220,161.18
  6. Step 6: Final answer
    x = 127,892.33

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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.