Home / 100,789.63-139,084.66-55,466.44

Finding the Fourth Proportional to 100,789.63, 139,084.66 and 55,466.44

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Solution

The fourth proportional to 100,789.63, 139,084.66 and 55,466.44 is: 76,540.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,789.63 : 139,084.66 = 55,466.44 : x
  2. Step 2: Convert to fraction form
    100,789.63/139,084.66 = 55,466.44/x
  3. Step 3: Cross multiply
    100,789.63x = 139,084.66 × 55,466.44
  4. Step 4: Simplify right side
    100,789.63x = 7,714,531,296.52
  5. Step 5: Solve for x
    x = 7,714,531,296.52/100,789.63
  6. Step 6: Final answer
    x = 76,540.93

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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.