Finding the Fourth Proportional to 100,516.29, 138,706.18 and 55,193.96
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Solution
The fourth proportional to 100,516.29, 138,706.18 and 55,193.96 is: 76,164.20
Step by Step Solution
- Step 1: Write the proportion equation
100,516.29 : 138,706.18 = 55,193.96 : x - Step 2: Convert to fraction form
100,516.29/138,706.18 = 55,193.96/x - Step 3: Cross multiply
100,516.29x = 138,706.18 × 55,193.96 - Step 4: Simplify right side
100,516.29x = 7,655,743,039.31 - Step 5: Solve for x
x = 7,655,743,039.31/100,516.29 - Step 6: Final answer
x = 76,164.20
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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.