Finding the Fourth Proportional to 120,075.48, 165,724.74 and 69,803.64
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Solution
The fourth proportional to 120,075.48, 165,724.74 and 69,803.64 is: 96,340.99
Step by Step Solution
- Step 1: Write the proportion equation
120,075.48 : 165,724.74 = 69,803.64 : x - Step 2: Convert to fraction form
120,075.48/165,724.74 = 69,803.64/x - Step 3: Cross multiply
120,075.48x = 165,724.74 × 69,803.64 - Step 4: Simplify right side
120,075.48x = 11,568,190,090.05 - Step 5: Solve for x
x = 11,568,190,090.05/120,075.48 - Step 6: Final answer
x = 96,340.99
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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.