Finding the Fourth Proportional to 129,888.08, 179,286.39 and 76,194.80
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Solution
The fourth proportional to 129,888.08, 179,286.39 and 76,194.80 is: 105,172.78
Step by Step Solution
- Step 1: Write the proportion equation
129,888.08 : 179,286.39 = 76,194.80 : x - Step 2: Convert to fraction form
129,888.08/179,286.39 = 76,194.80/x - Step 3: Cross multiply
129,888.08x = 179,286.39 × 76,194.80 - Step 4: Simplify right side
129,888.08x = 13,660,690,628.77 - Step 5: Solve for x
x = 13,660,690,628.77/129,888.08 - Step 6: Final answer
x = 105,172.78
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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.