Finding the Fourth Proportional to 136,644.19, 188,569.32 and 76,218.75
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Solution
The fourth proportional to 136,644.19, 188,569.32 and 76,218.75 is: 105,182.06
Step by Step Solution
- Step 1: Write the proportion equation
136,644.19 : 188,569.32 = 76,218.75 : x - Step 2: Convert to fraction form
136,644.19/188,569.32 = 76,218.75/x - Step 3: Cross multiply
136,644.19x = 188,569.32 × 76,218.75 - Step 4: Simplify right side
136,644.19x = 14,372,517,042.58 - Step 5: Solve for x
x = 14,372,517,042.58/136,644.19 - Step 6: Final answer
x = 105,182.06
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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.