Finding the Fourth Proportional to 91,351.44, 136,898.70 and 68,847.18
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Solution
The fourth proportional to 91,351.44, 136,898.70 and 68,847.18 is: 103,173.96
Step by Step Solution
- Step 1: Write the proportion equation
91,351.44 : 136,898.70 = 68,847.18 : x - Step 2: Convert to fraction form
91,351.44/136,898.70 = 68,847.18/x - Step 3: Cross multiply
91,351.44x = 136,898.70 × 68,847.18 - Step 4: Simplify right side
91,351.44x = 9,425,089,440.67 - Step 5: Solve for x
x = 9,425,089,440.67/91,351.44 - Step 6: Final answer
x = 103,173.96
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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.