Finding the Fourth Proportional to 129,644.73, 194,326.47 and 66,378.06
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Solution
The fourth proportional to 129,644.73, 194,326.47 and 66,378.06 is: 99,495.09
Step by Step Solution
- Step 1: Write the proportion equation
129,644.73 : 194,326.47 = 66,378.06 : x - Step 2: Convert to fraction form
129,644.73/194,326.47 = 66,378.06/x - Step 3: Cross multiply
129,644.73x = 194,326.47 × 66,378.06 - Step 4: Simplify right side
129,644.73x = 12,899,014,085.25 - Step 5: Solve for x
x = 12,899,014,085.25/129,644.73 - Step 6: Final answer
x = 99,495.09
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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.