Finding the Fourth Proportional to 136,609.16, 188,521.47 and 76,183.62
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Solution
The fourth proportional to 136,609.16, 188,521.47 and 76,183.62 is: 105,133.86
Step by Step Solution
- Step 1: Write the proportion equation
136,609.16 : 188,521.47 = 76,183.62 : x - Step 2: Convert to fraction form
136,609.16/188,521.47 = 76,183.62/x - Step 3: Cross multiply
136,609.16x = 188,521.47 × 76,183.62 - Step 4: Simplify right side
136,609.16x = 14,362,247,651.40 - Step 5: Solve for x
x = 14,362,247,651.40/136,609.16 - Step 6: Final answer
x = 105,133.86
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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.