Finding the Fourth Proportional to 161,313.68, 222,543.24 and 100,778.96
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Solution
The fourth proportional to 161,313.68, 222,543.24 and 100,778.96 is: 139,031.46
Step by Step Solution
- Step 1: Write the proportion equation
161,313.68 : 222,543.24 = 100,778.96 : x - Step 2: Convert to fraction form
161,313.68/222,543.24 = 100,778.96/x - Step 3: Cross multiply
161,313.68x = 222,543.24 × 100,778.96 - Step 4: Simplify right side
161,313.68x = 22,427,676,282.23 - Step 5: Solve for x
x = 22,427,676,282.23/161,313.68 - Step 6: Final answer
x = 139,031.46
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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.