Home / 100,951.44-139,319.09-55,629.35

Finding the Fourth Proportional to 100,951.44, 139,319.09 and 55,629.35

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Solution

The fourth proportional to 100,951.44, 139,319.09 and 55,629.35 is: 76,771.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,951.44 : 139,319.09 = 55,629.35 : x
  2. Step 2: Convert to fraction form
    100,951.44/139,319.09 = 55,629.35/x
  3. Step 3: Cross multiply
    100,951.44x = 139,319.09 × 55,629.35
  4. Step 4: Simplify right side
    100,951.44x = 7,750,229,444.55
  5. Step 5: Solve for x
    x = 7,750,229,444.55/100,951.44
  6. Step 6: Final answer
    x = 76,771.86

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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.