Finding the Fourth Proportional to 135,571.36, 187,045.70 and 78,202.98
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Solution
The fourth proportional to 135,571.36, 187,045.70 and 78,202.98 is: 107,895.44
Step by Step Solution
- Step 1: Write the proportion equation
135,571.36 : 187,045.70 = 78,202.98 : x - Step 2: Convert to fraction form
135,571.36/187,045.70 = 78,202.98/x - Step 3: Cross multiply
135,571.36x = 187,045.70 × 78,202.98 - Step 4: Simplify right side
135,571.36x = 14,627,531,136.19 - Step 5: Solve for x
x = 14,627,531,136.19/135,571.36 - Step 6: Final answer
x = 107,895.44
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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.