Finding the Fourth Proportional to 136,170.60, 187,912.70 and 75,739.94
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Solution
The fourth proportional to 136,170.60, 187,912.70 and 75,739.94 is: 104,519.60
Step by Step Solution
- Step 1: Write the proportion equation
136,170.60 : 187,912.70 = 75,739.94 : x - Step 2: Convert to fraction form
136,170.60/187,912.70 = 75,739.94/x - Step 3: Cross multiply
136,170.60x = 187,912.70 × 75,739.94 - Step 4: Simplify right side
136,170.60x = 14,232,496,623.24 - Step 5: Solve for x
x = 14,232,496,623.24/136,170.60 - Step 6: Final answer
x = 104,519.60
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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.