Finding the Fourth Proportional to 137,227.92, 189,378.18 and 76,808.99
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Solution
The fourth proportional to 137,227.92, 189,378.18 and 76,808.99 is: 105,998.44
Step by Step Solution
- Step 1: Write the proportion equation
137,227.92 : 189,378.18 = 76,808.99 : x - Step 2: Convert to fraction form
137,227.92/189,378.18 = 76,808.99/x - Step 3: Cross multiply
137,227.92x = 189,378.18 × 76,808.99 - Step 4: Simplify right side
137,227.92x = 14,545,945,786.95 - Step 5: Solve for x
x = 14,545,945,786.95/137,227.92 - Step 6: Final answer
x = 105,998.44
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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.