Finding the Fourth Proportional to 80,351.84, 120,409.08 and 75,858.68
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Solution
The fourth proportional to 80,351.84, 120,409.08 and 75,858.68 is: 113,675.98
Step by Step Solution
- Step 1: Write the proportion equation
80,351.84 : 120,409.08 = 75,858.68 : x - Step 2: Convert to fraction form
80,351.84/120,409.08 = 75,858.68/x - Step 3: Cross multiply
80,351.84x = 120,409.08 × 75,858.68 - Step 4: Simplify right side
80,351.84x = 9,134,073,868.81 - Step 5: Solve for x
x = 9,134,073,868.81/80,351.84 - Step 6: Final answer
x = 113,675.98
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.