Finding the Fourth Proportional to 161,128.70, 222,350.06 and 89,513.09
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Solution
The fourth proportional to 161,128.70, 222,350.06 and 89,513.09 is: 123,523.87
Step by Step Solution
- Step 1: Write the proportion equation
161,128.70 : 222,350.06 = 89,513.09 : x - Step 2: Convert to fraction form
161,128.70/222,350.06 = 89,513.09/x - Step 3: Cross multiply
161,128.70x = 222,350.06 × 89,513.09 - Step 4: Simplify right side
161,128.70x = 19,903,240,932.29 - Step 5: Solve for x
x = 19,903,240,932.29/161,128.70 - Step 6: Final answer
x = 123,523.87
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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.