Home / 101,049.11-139,445.46-55,725.80

Finding the Fourth Proportional to 101,049.11, 139,445.46 and 55,725.80

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Solution

The fourth proportional to 101,049.11, 139,445.46 and 55,725.80 is: 76,900.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,049.11 : 139,445.46 = 55,725.80 : x
  2. Step 2: Convert to fraction form
    101,049.11/139,445.46 = 55,725.80/x
  3. Step 3: Cross multiply
    101,049.11x = 139,445.46 × 55,725.80
  4. Step 4: Simplify right side
    101,049.11x = 7,770,709,814.87
  5. Step 5: Solve for x
    x = 7,770,709,814.87/101,049.11
  6. Step 6: Final answer
    x = 76,900.33

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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.