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Finding the Fourth Proportional to 101,007.67, 139,388.01 and 55,684.60

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Solution

The fourth proportional to 101,007.67, 139,388.01 and 55,684.60 is: 76,843.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,007.67 : 139,388.01 = 55,684.60 : x
  2. Step 2: Convert to fraction form
    101,007.67/139,388.01 = 55,684.60/x
  3. Step 3: Cross multiply
    101,007.67x = 139,388.01 × 55,684.60
  4. Step 4: Simplify right side
    101,007.67x = 7,761,765,494.20
  5. Step 5: Solve for x
    x = 7,761,765,494.20/101,007.67
  6. Step 6: Final answer
    x = 76,843.33

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1.5x scale

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.