Finding the Fourth Proportional to 135,161.60, 186,548.32 and 78,581.12
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Solution
The fourth proportional to 135,161.60, 186,548.32 and 78,581.12 is: 108,456.66
Step by Step Solution
- Step 1: Write the proportion equation
135,161.60 : 186,548.32 = 78,581.12 : x - Step 2: Convert to fraction form
135,161.60/186,548.32 = 78,581.12/x - Step 3: Cross multiply
135,161.60x = 186,548.32 × 78,581.12 - Step 4: Simplify right side
135,161.60x = 14,659,175,919.72 - Step 5: Solve for x
x = 14,659,175,919.72/135,161.60 - Step 6: Final answer
x = 108,456.66
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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.