Finding the Fourth Proportional to 116,782.80, 161,163.47 and 71,459.96
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Solution
The fourth proportional to 116,782.80, 161,163.47 and 71,459.96 is: 98,616.70
Step by Step Solution
- Step 1: Write the proportion equation
116,782.80 : 161,163.47 = 71,459.96 : x - Step 2: Convert to fraction form
116,782.80/161,163.47 = 71,459.96/x - Step 3: Cross multiply
116,782.80x = 161,163.47 × 71,459.96 - Step 4: Simplify right side
116,782.80x = 11,516,733,956.54 - Step 5: Solve for x
x = 11,516,733,956.54/116,782.80 - Step 6: Final answer
x = 98,616.70
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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.