Finding the Fourth Proportional to 149,754.81, 206,669.97 and 81,778.08
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Solution
The fourth proportional to 149,754.81, 206,669.97 and 81,778.08 is: 112,858.30
Step by Step Solution
- Step 1: Write the proportion equation
149,754.81 : 206,669.97 = 81,778.08 : x - Step 2: Convert to fraction form
149,754.81/206,669.97 = 81,778.08/x - Step 3: Cross multiply
149,754.81x = 206,669.97 × 81,778.08 - Step 4: Simplify right side
149,754.81x = 16,901,073,340.26 - Step 5: Solve for x
x = 16,901,073,340.26/149,754.81 - Step 6: Final answer
x = 112,858.30
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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.