Finding the Fourth Proportional to 136,975.75, 189,025.99 and 76,546.38
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Solution
The fourth proportional to 136,975.75, 189,025.99 and 76,546.38 is: 105,633.70
Step by Step Solution
- Step 1: Write the proportion equation
136,975.75 : 189,025.99 = 76,546.38 : x - Step 2: Convert to fraction form
136,975.75/189,025.99 = 76,546.38/x - Step 3: Cross multiply
136,975.75x = 189,025.99 × 76,546.38 - Step 4: Simplify right side
136,975.75x = 14,469,255,260.42 - Step 5: Solve for x
x = 14,469,255,260.42/136,975.75 - Step 6: Final answer
x = 105,633.70
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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.