Finding the Fourth Proportional to 135,450.05, 186,922.48 and 81,724.69
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Solution
The fourth proportional to 135,450.05, 186,922.48 and 81,724.69 is: 112,780.92
Step by Step Solution
- Step 1: Write the proportion equation
135,450.05 : 186,922.48 = 81,724.69 : x - Step 2: Convert to fraction form
135,450.05/186,922.48 = 81,724.69/x - Step 3: Cross multiply
135,450.05x = 186,922.48 × 81,724.69 - Step 4: Simplify right side
135,450.05x = 15,276,181,060.41 - Step 5: Solve for x
x = 15,276,181,060.41/135,450.05 - Step 6: Final answer
x = 112,780.92
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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.