Finding the Fourth Proportional to 161,418.32, 222,697.11 and 100,965.99
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Solution
The fourth proportional to 161,418.32, 222,697.11 and 100,965.99 is: 139,295.43
Step by Step Solution
- Step 1: Write the proportion equation
161,418.32 : 222,697.11 = 100,965.99 : x - Step 2: Convert to fraction form
161,418.32/222,697.11 = 100,965.99/x - Step 3: Cross multiply
161,418.32x = 222,697.11 × 100,965.99 - Step 4: Simplify right side
161,418.32x = 22,484,834,207.25 - Step 5: Solve for x
x = 22,484,834,207.25/161,418.32 - Step 6: Final answer
x = 139,295.43
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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.