Finding the Fourth Proportional to 121,530.36, 167,721.36 and 67,093.20
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Solution
The fourth proportional to 121,530.36, 167,721.36 and 67,093.20 is: 92,593.84
Step by Step Solution
- Step 1: Write the proportion equation
121,530.36 : 167,721.36 = 67,093.20 : x - Step 2: Convert to fraction form
121,530.36/167,721.36 = 67,093.20/x - Step 3: Cross multiply
121,530.36x = 167,721.36 × 67,093.20 - Step 4: Simplify right side
121,530.36x = 11,252,962,750.75 - Step 5: Solve for x
x = 11,252,962,750.75/121,530.36 - Step 6: Final answer
x = 92,593.84
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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.