Finding the Fourth Proportional to 212,221.75, 292,907.62 and 121,638.43
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Solution
The fourth proportional to 212,221.75, 292,907.62 and 121,638.43 is: 167,884.88
Step by Step Solution
- Step 1: Write the proportion equation
212,221.75 : 292,907.62 = 121,638.43 : x - Step 2: Convert to fraction form
212,221.75/292,907.62 = 121,638.43/x - Step 3: Cross multiply
212,221.75x = 292,907.62 × 121,638.43 - Step 4: Simplify right side
212,221.75x = 35,628,823,031.84 - Step 5: Solve for x
x = 35,628,823,031.84/212,221.75 - Step 6: Final answer
x = 167,884.88
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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.