Finding the Fourth Proportional to 151,991.66, 209,639.71 and 106,679.75
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Solution
The fourth proportional to 151,991.66, 209,639.71 and 106,679.75 is: 147,141.70
Step by Step Solution
- Step 1: Write the proportion equation
151,991.66 : 209,639.71 = 106,679.75 : x - Step 2: Convert to fraction form
151,991.66/209,639.71 = 106,679.75/x - Step 3: Cross multiply
151,991.66x = 209,639.71 × 106,679.75 - Step 4: Simplify right side
151,991.66x = 22,364,311,852.87 - Step 5: Solve for x
x = 22,364,311,852.87/151,991.66 - Step 6: Final answer
x = 147,141.70
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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.