Finding the Fourth Proportional to 138,516.23, 208,207.80 and 91,433.97
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Solution
The fourth proportional to 138,516.23, 208,207.80 and 91,433.97 is: 137,437.08
Step by Step Solution
- Step 1: Write the proportion equation
138,516.23 : 208,207.80 = 91,433.97 : x - Step 2: Convert to fraction form
138,516.23/208,207.80 = 91,433.97/x - Step 3: Cross multiply
138,516.23x = 208,207.80 × 91,433.97 - Step 4: Simplify right side
138,516.23x = 19,037,265,738.97 - Step 5: Solve for x
x = 19,037,265,738.97/138,516.23 - Step 6: Final answer
x = 137,437.08
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.