Finding the Fourth Proportional to 212,226.76, 292,914.52 and 121,643.44
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Solution
The fourth proportional to 212,226.76, 292,914.52 and 121,643.44 is: 167,891.79
Step by Step Solution
- Step 1: Write the proportion equation
212,226.76 : 292,914.52 = 121,643.44 : x - Step 2: Convert to fraction form
212,226.76/292,914.52 = 121,643.44/x - Step 3: Cross multiply
212,226.76x = 292,914.52 × 121,643.44 - Step 4: Simplify right side
212,226.76x = 35,631,129,838.75 - Step 5: Solve for x
x = 35,631,129,838.75/212,226.76 - Step 6: Final answer
x = 167,891.79
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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.