Finding the Fourth Proportional to 206,919.09, 310,157.96 and 117,981.09
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Solution
The fourth proportional to 206,919.09, 310,157.96 and 117,981.09 is: 176,845.81
Step by Step Solution
- Step 1: Write the proportion equation
206,919.09 : 310,157.96 = 117,981.09 : x - Step 2: Convert to fraction form
206,919.09/310,157.96 = 117,981.09/x - Step 3: Cross multiply
206,919.09x = 310,157.96 × 117,981.09 - Step 4: Simplify right side
206,919.09x = 36,592,774,192.98 - Step 5: Solve for x
x = 36,592,774,192.98/206,919.09 - Step 6: Final answer
x = 176,845.81
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.