Finding the Fourth Proportional to 136,912.76, 205,446.47 and 73,731.55
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Solution
The fourth proportional to 136,912.76, 205,446.47 and 73,731.55 is: 110,638.96
Step by Step Solution
- Step 1: Write the proportion equation
136,912.76 : 205,446.47 = 73,731.55 : x - Step 2: Convert to fraction form
136,912.76/205,446.47 = 73,731.55/x - Step 3: Cross multiply
136,912.76x = 205,446.47 × 73,731.55 - Step 4: Simplify right side
136,912.76x = 15,147,885,792.85 - Step 5: Solve for x
x = 15,147,885,792.85/136,912.76 - Step 6: Final answer
x = 110,638.96
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.