Finding the Fourth Proportional to 138,684.20, 207,887.42 and 68,614.44
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Solution
The fourth proportional to 138,684.20, 207,887.42 and 68,614.44 is: 102,852.95
Step by Step Solution
- Step 1: Write the proportion equation
138,684.20 : 207,887.42 = 68,614.44 : x - Step 2: Convert to fraction form
138,684.20/207,887.42 = 68,614.44/x - Step 3: Cross multiply
138,684.20x = 207,887.42 × 68,614.44 - Step 4: Simplify right side
138,684.20x = 14,264,078,906.34 - Step 5: Solve for x
x = 14,264,078,906.34/138,684.20 - Step 6: Final answer
x = 102,852.95
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1.5x scale
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.