Home / 101,039.33-139,431.07-55,719.23

Finding the Fourth Proportional to 101,039.33, 139,431.07 and 55,719.23

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Solution

The fourth proportional to 101,039.33, 139,431.07 and 55,719.23 is: 76,890.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,039.33 : 139,431.07 = 55,719.23 : x
  2. Step 2: Convert to fraction form
    101,039.33/139,431.07 = 55,719.23/x
  3. Step 3: Cross multiply
    101,039.33x = 139,431.07 × 55,719.23
  4. Step 4: Simplify right side
    101,039.33x = 7,768,991,230.97
  5. Step 5: Solve for x
    x = 7,768,991,230.97/101,039.33
  6. Step 6: Final answer
    x = 76,890.76

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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.