Finding the Fourth Proportional to 136,474.19, 188,331.84 and 76,043.54
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Solution
The fourth proportional to 136,474.19, 188,331.84 and 76,043.54 is: 104,938.67
Step by Step Solution
- Step 1: Write the proportion equation
136,474.19 : 188,331.84 = 76,043.54 : x - Step 2: Convert to fraction form
136,474.19/188,331.84 = 76,043.54/x - Step 3: Cross multiply
136,474.19x = 188,331.84 × 76,043.54 - Step 4: Simplify right side
136,474.19x = 14,321,420,279.14 - Step 5: Solve for x
x = 14,321,420,279.14/136,474.19 - Step 6: Final answer
x = 104,938.67
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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.