Finding the Fourth Proportional to 117,289.63, 161,881.37 and 66,988.63
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Solution
The fourth proportional to 117,289.63, 161,881.37 and 66,988.63 is: 92,456.69
Step by Step Solution
- Step 1: Write the proportion equation
117,289.63 : 161,881.37 = 66,988.63 : x - Step 2: Convert to fraction form
117,289.63/161,881.37 = 66,988.63/x - Step 3: Cross multiply
117,289.63x = 161,881.37 × 66,988.63 - Step 4: Simplify right side
117,289.63x = 10,844,211,198.82 - Step 5: Solve for x
x = 10,844,211,198.82/117,289.63 - Step 6: Final answer
x = 92,456.69
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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.