Finding the Fourth Proportional to 139,676.94, 192,728.70 and 91,266.08
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Solution
The fourth proportional to 139,676.94, 192,728.70 and 91,266.08 is: 125,930.54
Step by Step Solution
- Step 1: Write the proportion equation
139,676.94 : 192,728.70 = 91,266.08 : x - Step 2: Convert to fraction form
139,676.94/192,728.70 = 91,266.08/x - Step 3: Cross multiply
139,676.94x = 192,728.70 × 91,266.08 - Step 4: Simplify right side
139,676.94x = 17,589,591,988.85 - Step 5: Solve for x
x = 17,589,591,988.85/139,676.94 - Step 6: Final answer
x = 125,930.54
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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.