Finding the Fourth Proportional to 135,187.80, 186,571.26 and 74,772.60
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Solution
The fourth proportional to 135,187.80, 186,571.26 and 74,772.60 is: 103,192.88
Step by Step Solution
- Step 1: Write the proportion equation
135,187.80 : 186,571.26 = 74,772.60 : x - Step 2: Convert to fraction form
135,187.80/186,571.26 = 74,772.60/x - Step 3: Cross multiply
135,187.80x = 186,571.26 × 74,772.60 - Step 4: Simplify right side
135,187.80x = 13,950,418,195.48 - Step 5: Solve for x
x = 13,950,418,195.48/135,187.80 - Step 6: Final answer
x = 103,192.88
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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.