Finding the Fourth Proportional to 117,099.12, 161,556.92 and 66,105.84
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Solution
The fourth proportional to 117,099.12, 161,556.92 and 66,105.84 is: 91,203.55
Step by Step Solution
- Step 1: Write the proportion equation
117,099.12 : 161,556.92 = 66,105.84 : x - Step 2: Convert to fraction form
117,099.12/161,556.92 = 66,105.84/x - Step 3: Cross multiply
117,099.12x = 161,556.92 × 66,105.84 - Step 4: Simplify right side
117,099.12x = 10,679,855,904.41 - Step 5: Solve for x
x = 10,679,855,904.41/117,099.12 - Step 6: Final answer
x = 91,203.55
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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.