Finding the Fourth Proportional to 135,075.72, 202,549.97 and 78,932.05
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Solution
The fourth proportional to 135,075.72, 202,549.97 and 78,932.05 is: 118,360.90
Step by Step Solution
- Step 1: Write the proportion equation
135,075.72 : 202,549.97 = 78,932.05 : x - Step 2: Convert to fraction form
135,075.72/202,549.97 = 78,932.05/x - Step 3: Cross multiply
135,075.72x = 202,549.97 × 78,932.05 - Step 4: Simplify right side
135,075.72x = 15,987,684,359.54 - Step 5: Solve for x
x = 15,987,684,359.54/135,075.72 - Step 6: Final answer
x = 118,360.90
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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.