Finding the Fourth Proportional to 136,618.14, 188,533.86 and 76,192.62
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Solution
The fourth proportional to 136,618.14, 188,533.86 and 76,192.62 is: 105,146.28
Step by Step Solution
- Step 1: Write the proportion equation
136,618.14 : 188,533.86 = 76,192.62 : x - Step 2: Convert to fraction form
136,618.14/188,533.86 = 76,192.62/x - Step 3: Cross multiply
136,618.14x = 188,533.86 × 76,192.62 - Step 4: Simplify right side
136,618.14x = 14,364,888,752.11 - Step 5: Solve for x
x = 14,364,888,752.11/136,618.14 - Step 6: Final answer
x = 105,146.28
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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.