Finding the Fourth Proportional to 135,389.75, 186,839.36 and 74,965.97
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Solution
The fourth proportional to 135,389.75, 186,839.36 and 74,965.97 is: 103,453.88
Step by Step Solution
- Step 1: Write the proportion equation
135,389.75 : 186,839.36 = 74,965.97 : x - Step 2: Convert to fraction form
135,389.75/186,839.36 = 74,965.97/x - Step 3: Cross multiply
135,389.75x = 186,839.36 × 74,965.97 - Step 4: Simplify right side
135,389.75x = 14,006,594,229.97 - Step 5: Solve for x
x = 14,006,594,229.97/135,389.75 - Step 6: Final answer
x = 103,453.88
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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.