Finding the Fourth Proportional to 117,387.36, 161,969.22 and 69,656.49
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Solution
The fourth proportional to 117,387.36, 161,969.22 and 69,656.49 is: 96,110.92
Step by Step Solution
- Step 1: Write the proportion equation
117,387.36 : 161,969.22 = 69,656.49 : x - Step 2: Convert to fraction form
117,387.36/161,969.22 = 69,656.49/x - Step 3: Cross multiply
117,387.36x = 161,969.22 × 69,656.49 - Step 4: Simplify right side
117,387.36x = 11,282,207,353.24 - Step 5: Solve for x
x = 11,282,207,353.24/117,387.36 - Step 6: Final answer
x = 96,110.92
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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.