Finding the Fourth Proportional to 117,015.21, 161,501.99 and 66,043.53
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Solution
The fourth proportional to 117,015.21, 161,501.99 and 66,043.53 is: 91,151.92
Step by Step Solution
- Step 1: Write the proportion equation
117,015.21 : 161,501.99 = 66,043.53 : x - Step 2: Convert to fraction form
117,015.21/161,501.99 = 66,043.53/x - Step 3: Cross multiply
117,015.21x = 161,501.99 × 66,043.53 - Step 4: Simplify right side
117,015.21x = 10,666,161,191.41 - Step 5: Solve for x
x = 10,666,161,191.41/117,015.21 - Step 6: Final answer
x = 91,151.92
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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.