Finding the Fourth Proportional to 149,195.06, 205,891.80 and 81,213.99
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Solution
The fourth proportional to 149,195.06, 205,891.80 and 81,213.99 is: 112,076.73
Step by Step Solution
- Step 1: Write the proportion equation
149,195.06 : 205,891.80 = 81,213.99 : x - Step 2: Convert to fraction form
149,195.06/205,891.80 = 81,213.99/x - Step 3: Cross multiply
149,195.06x = 205,891.80 × 81,213.99 - Step 4: Simplify right side
149,195.06x = 16,721,293,861.38 - Step 5: Solve for x
x = 16,721,293,861.38/149,195.06 - Step 6: Final answer
x = 112,076.73
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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.