Finding the Fourth Proportional to 117,493.76, 162,087.68 and 81,768.96
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Solution
The fourth proportional to 117,493.76, 162,087.68 and 81,768.96 is: 112,803.79
Step by Step Solution
- Step 1: Write the proportion equation
117,493.76 : 162,087.68 = 81,768.96 : x - Step 2: Convert to fraction form
117,493.76/162,087.68 = 81,768.96/x - Step 3: Cross multiply
117,493.76x = 162,087.68 × 81,768.96 - Step 4: Simplify right side
117,493.76x = 13,253,741,022.41 - Step 5: Solve for x
x = 13,253,741,022.41/117,493.76 - Step 6: Final answer
x = 112,803.79
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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.