Finding the Fourth Proportional to 151,405.80, 208,944.74 and 86,886.84
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Solution
The fourth proportional to 151,405.80, 208,944.74 and 86,886.84 is: 119,906.55
Step by Step Solution
- Step 1: Write the proportion equation
151,405.80 : 208,944.74 = 86,886.84 : x - Step 2: Convert to fraction form
151,405.80/208,944.74 = 86,886.84/x - Step 3: Cross multiply
151,405.80x = 208,944.74 × 86,886.84 - Step 4: Simplify right side
151,405.80x = 18,154,546,975.24 - Step 5: Solve for x
x = 18,154,546,975.24/151,405.80 - Step 6: Final answer
x = 119,906.55
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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.