Finding the Fourth Proportional to 221,716.54, 305,968.34 and 121,114.54
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Solution
The fourth proportional to 221,716.54, 305,968.34 and 121,114.54 is: 167,137.80
Step by Step Solution
- Step 1: Write the proportion equation
221,716.54 : 305,968.34 = 121,114.54 : x - Step 2: Convert to fraction form
221,716.54/305,968.34 = 121,114.54/x - Step 3: Cross multiply
221,716.54x = 305,968.34 × 121,114.54 - Step 4: Simplify right side
221,716.54x = 37,057,214,753.66 - Step 5: Solve for x
x = 37,057,214,753.66/221,716.54 - Step 6: Final answer
x = 167,137.80
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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.