Finding the Fourth Proportional to 206,517.12, 284,959.80 and 121,622.64
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Solution
The fourth proportional to 206,517.12, 284,959.80 and 121,622.64 is: 167,819.32
Step by Step Solution
- Step 1: Write the proportion equation
206,517.12 : 284,959.80 = 121,622.64 : x - Step 2: Convert to fraction form
206,517.12/284,959.80 = 121,622.64/x - Step 3: Cross multiply
206,517.12x = 284,959.80 × 121,622.64 - Step 4: Simplify right side
206,517.12x = 34,657,563,169.87 - Step 5: Solve for x
x = 34,657,563,169.87/206,517.12 - Step 6: Final answer
x = 167,819.32
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1.5x scale
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.