Home / 100,954.27-139,316.93-55,013.60

Finding the Fourth Proportional to 100,954.27, 139,316.93 and 55,013.60

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Solution

The fourth proportional to 100,954.27, 139,316.93 and 55,013.60 is: 75,918.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,954.27 : 139,316.93 = 55,013.60 : x
  2. Step 2: Convert to fraction form
    100,954.27/139,316.93 = 55,013.60/x
  3. Step 3: Cross multiply
    100,954.27x = 139,316.93 × 55,013.60
  4. Step 4: Simplify right side
    100,954.27x = 7,664,325,860.25
  5. Step 5: Solve for x
    x = 7,664,325,860.25/100,954.27
  6. Step 6: Final answer
    x = 75,918.79

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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.