Finding the Fourth Proportional to 121,064.97, 167,075.04 and 100,888.05
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Solution
The fourth proportional to 121,064.97, 167,075.04 and 100,888.05 is: 139,229.99
Step by Step Solution
- Step 1: Write the proportion equation
121,064.97 : 167,075.04 = 100,888.05 : x - Step 2: Convert to fraction form
121,064.97/167,075.04 = 100,888.05/x - Step 3: Cross multiply
121,064.97x = 167,075.04 × 100,888.05 - Step 4: Simplify right side
121,064.97x = 16,855,874,989.27 - Step 5: Solve for x
x = 16,855,874,989.27/121,064.97 - Step 6: Final answer
x = 139,229.99
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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.