Finding the Fourth Proportional to 117,138.14, 161,649.89 and 63,422.99
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Solution
The fourth proportional to 117,138.14, 161,649.89 and 63,422.99 is: 87,523.32
Step by Step Solution
- Step 1: Write the proportion equation
117,138.14 : 161,649.89 = 63,422.99 : x - Step 2: Convert to fraction form
117,138.14/161,649.89 = 63,422.99/x - Step 3: Cross multiply
117,138.14x = 161,649.89 × 63,422.99 - Step 4: Simplify right side
117,138.14x = 10,252,318,548.72 - Step 5: Solve for x
x = 10,252,318,548.72/117,138.14 - Step 6: Final answer
x = 87,523.32
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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.