Finding the Fourth Proportional to 136,292.75, 188,063.81 and 81,833.42
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Solution
The fourth proportional to 136,292.75, 188,063.81 and 81,833.42 is: 112,917.99
Step by Step Solution
- Step 1: Write the proportion equation
136,292.75 : 188,063.81 = 81,833.42 : x - Step 2: Convert to fraction form
136,292.75/188,063.81 = 81,833.42/x - Step 3: Cross multiply
136,292.75x = 188,063.81 × 81,833.42 - Step 4: Simplify right side
136,292.75x = 15,389,903,810.21 - Step 5: Solve for x
x = 15,389,903,810.21/136,292.75 - Step 6: Final answer
x = 112,917.99
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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.