Finding the Fourth Proportional to 118,706.48, 177,936.64 and 74,231.12
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Solution
The fourth proportional to 118,706.48, 177,936.64 and 74,231.12 is: 111,269.71
Step by Step Solution
- Step 1: Write the proportion equation
118,706.48 : 177,936.64 = 74,231.12 : x - Step 2: Convert to fraction form
118,706.48/177,936.64 = 74,231.12/x - Step 3: Cross multiply
118,706.48x = 177,936.64 × 74,231.12 - Step 4: Simplify right side
118,706.48x = 13,208,436,076.24 - Step 5: Solve for x
x = 13,208,436,076.24/118,706.48 - Step 6: Final answer
x = 111,269.71
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.