Home / 100,856.88-139,181.37-55,533.96

Finding the Fourth Proportional to 100,856.88, 139,181.37 and 55,533.96

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Solution

The fourth proportional to 100,856.88, 139,181.37 and 55,533.96 is: 76,636.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,856.88 : 139,181.37 = 55,533.96 : x
  2. Step 2: Convert to fraction form
    100,856.88/139,181.37 = 55,533.96/x
  3. Step 3: Cross multiply
    100,856.88x = 139,181.37 × 55,533.96
  4. Step 4: Simplify right side
    100,856.88x = 7,729,292,634.33
  5. Step 5: Solve for x
    x = 7,729,292,634.33/100,856.88
  6. Step 6: Final answer
    x = 76,636.25

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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.