Finding the Fourth Proportional to 135,213.96, 186,578.70 and 74,776.44
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Solution
The fourth proportional to 135,213.96, 186,578.70 and 74,776.44 is: 103,182.33
Step by Step Solution
- Step 1: Write the proportion equation
135,213.96 : 186,578.70 = 74,776.44 : x - Step 2: Convert to fraction form
135,213.96/186,578.70 = 74,776.44/x - Step 3: Cross multiply
135,213.96x = 186,578.70 × 74,776.44 - Step 4: Simplify right side
135,213.96x = 13,951,690,965.83 - Step 5: Solve for x
x = 13,951,690,965.83/135,213.96 - Step 6: Final answer
x = 103,182.33
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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.