Finding the Fourth Proportional to 102,910.06, 141,879.75 and 74,205.70
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Solution
The fourth proportional to 102,910.06, 141,879.75 and 74,205.70 is: 102,305.70
Step by Step Solution
- Step 1: Write the proportion equation
102,910.06 : 141,879.75 = 74,205.70 : x - Step 2: Convert to fraction form
102,910.06/141,879.75 = 74,205.70/x - Step 3: Cross multiply
102,910.06x = 141,879.75 × 74,205.70 - Step 4: Simplify right side
102,910.06x = 10,528,286,164.58 - Step 5: Solve for x
x = 10,528,286,164.58/102,910.06 - Step 6: Final answer
x = 102,305.70
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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.