Finding the Fourth Proportional to 138,596.20, 207,602.70 and 115,268.20
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Solution
The fourth proportional to 138,596.20, 207,602.70 and 115,268.20 is: 172,659.78
Step by Step Solution
- Step 1: Write the proportion equation
138,596.20 : 207,602.70 = 115,268.20 : x - Step 2: Convert to fraction form
138,596.20/207,602.70 = 115,268.20/x - Step 3: Cross multiply
138,596.20x = 207,602.70 × 115,268.20 - Step 4: Simplify right side
138,596.20x = 23,929,989,544.14 - Step 5: Solve for x
x = 23,929,989,544.14/138,596.20 - Step 6: Final answer
x = 172,659.78
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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.