Finding the Fourth Proportional to 136,914.09, 188,934.69 and 76,472.70
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Solution
The fourth proportional to 136,914.09, 188,934.69 and 76,472.70 is: 105,528.55
Step by Step Solution
- Step 1: Write the proportion equation
136,914.09 : 188,934.69 = 76,472.70 : x - Step 2: Convert to fraction form
136,914.09/188,934.69 = 76,472.70/x - Step 3: Cross multiply
136,914.09x = 188,934.69 × 76,472.70 - Step 4: Simplify right side
136,914.09x = 14,448,345,867.96 - Step 5: Solve for x
x = 14,448,345,867.96/136,914.09 - Step 6: Final answer
x = 105,528.55
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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.