Home / 225,738.60-311,551-139,725.18

Finding the Fourth Proportional to 225,738.60, 311,551 and 139,725.18

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Solution

The fourth proportional to 225,738.60, 311,551 and 139,725.18 is: 192,840.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,738.60 : 311,551 = 139,725.18 : x
  2. Step 2: Convert to fraction form
    225,738.60/311,551 = 139,725.18/x
  3. Step 3: Cross multiply
    225,738.60x = 311,551 × 139,725.18
  4. Step 4: Simplify right side
    225,738.60x = 43,531,519,554.18
  5. Step 5: Solve for x
    x = 43,531,519,554.18/225,738.60
  6. Step 6: Final answer
    x = 192,840.39

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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.