Home / 103,385.63-154,940.46-55,255.57

Finding the Fourth Proportional to 103,385.63, 154,940.46 and 55,255.57

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Solution

The fourth proportional to 103,385.63, 154,940.46 and 55,255.57 is: 82,809.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,385.63 : 154,940.46 = 55,255.57 : x
  2. Step 2: Convert to fraction form
    103,385.63/154,940.46 = 55,255.57/x
  3. Step 3: Cross multiply
    103,385.63x = 154,940.46 × 55,255.57
  4. Step 4: Simplify right side
    103,385.63x = 8,561,323,021.05
  5. Step 5: Solve for x
    x = 8,561,323,021.05/103,385.63
  6. Step 6: Final answer
    x = 82,809.61

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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.