Finding the Fourth Proportional to 117,090.26, 161,588.47 and 71,759.48
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Solution
The fourth proportional to 117,090.26, 161,588.47 and 71,759.48 is: 99,030.49
Step by Step Solution
- Step 1: Write the proportion equation
117,090.26 : 161,588.47 = 71,759.48 : x - Step 2: Convert to fraction form
117,090.26/161,588.47 = 71,759.48/x - Step 3: Cross multiply
117,090.26x = 161,588.47 × 71,759.48 - Step 4: Simplify right side
117,090.26x = 11,595,504,805.77 - Step 5: Solve for x
x = 11,595,504,805.77/117,090.26 - Step 6: Final answer
x = 99,030.49
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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.