Finding the Fourth Proportional to 109,761.21, 151,449.84 and 69,446.70
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Solution
The fourth proportional to 109,761.21, 151,449.84 and 69,446.70 is: 95,823.39
Step by Step Solution
- Step 1: Write the proportion equation
109,761.21 : 151,449.84 = 69,446.70 : x - Step 2: Convert to fraction form
109,761.21/151,449.84 = 69,446.70/x - Step 3: Cross multiply
109,761.21x = 151,449.84 × 69,446.70 - Step 4: Simplify right side
109,761.21x = 10,517,691,603.53 - Step 5: Solve for x
x = 10,517,691,603.53/109,761.21 - Step 6: Final answer
x = 95,823.39
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1.5x scale
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.