Home / 100,985.54-139,361.00-55,665.27

Finding the Fourth Proportional to 100,985.54, 139,361.00 and 55,665.27

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Solution

The fourth proportional to 100,985.54, 139,361.00 and 55,665.27 is: 76,818.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,985.54 : 139,361.00 = 55,665.27 : x
  2. Step 2: Convert to fraction form
    100,985.54/139,361.00 = 55,665.27/x
  3. Step 3: Cross multiply
    100,985.54x = 139,361.00 × 55,665.27
  4. Step 4: Simplify right side
    100,985.54x = 7,757,567,414.14
  5. Step 5: Solve for x
    x = 7,757,567,414.14/100,985.54
  6. Step 6: Final answer
    x = 76,818.60

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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.