Finding the Fourth Proportional to 117,134.85, 161,580.10 and 74,100.99
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Solution
The fourth proportional to 117,134.85, 161,580.10 and 74,100.99 is: 102,217.62
Step by Step Solution
- Step 1: Write the proportion equation
117,134.85 : 161,580.10 = 74,100.99 : x - Step 2: Convert to fraction form
117,134.85/161,580.10 = 74,100.99/x - Step 3: Cross multiply
117,134.85x = 161,580.10 × 74,100.99 - Step 4: Simplify right side
117,134.85x = 11,973,245,374.30 - Step 5: Solve for x
x = 11,973,245,374.30/117,134.85 - Step 6: Final answer
x = 102,217.62
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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.