Finding the Fourth Proportional to 139,489.74, 192,428.19 and 82,861.02
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Solution
The fourth proportional to 139,489.74, 192,428.19 and 82,861.02 is: 114,308.02
Step by Step Solution
- Step 1: Write the proportion equation
139,489.74 : 192,428.19 = 82,861.02 : x - Step 2: Convert to fraction form
139,489.74/192,428.19 = 82,861.02/x - Step 3: Cross multiply
139,489.74x = 192,428.19 × 82,861.02 - Step 4: Simplify right side
139,489.74x = 15,944,796,100.15 - Step 5: Solve for x
x = 15,944,796,100.15/139,489.74 - Step 6: Final answer
x = 114,308.02
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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.