Finding the Fourth Proportional to 135,190.88, 186,517.20 and 81,455.68
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Solution
The fourth proportional to 135,190.88, 186,517.20 and 81,455.68 is: 112,380.99
Step by Step Solution
- Step 1: Write the proportion equation
135,190.88 : 186,517.20 = 81,455.68 : x - Step 2: Convert to fraction form
135,190.88/186,517.20 = 81,455.68/x - Step 3: Cross multiply
135,190.88x = 186,517.20 × 81,455.68 - Step 4: Simplify right side
135,190.88x = 15,192,885,357.70 - Step 5: Solve for x
x = 15,192,885,357.70/135,190.88 - Step 6: Final answer
x = 112,380.99
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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.