Finding the Fourth Proportional to 137,684.21, 206,334.08 and 74,367.82
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Solution
The fourth proportional to 137,684.21, 206,334.08 and 74,367.82 is: 111,447.90
Step by Step Solution
- Step 1: Write the proportion equation
137,684.21 : 206,334.08 = 74,367.82 : x - Step 2: Convert to fraction form
137,684.21/206,334.08 = 74,367.82/x - Step 3: Cross multiply
137,684.21x = 206,334.08 × 74,367.82 - Step 4: Simplify right side
137,684.21x = 15,344,614,833.63 - Step 5: Solve for x
x = 15,344,614,833.63/137,684.21 - Step 6: Final answer
x = 111,447.90
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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.