Finding the Fourth Proportional to 121,375.28, 181,936.58 and 67,988.99
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Solution
The fourth proportional to 121,375.28, 181,936.58 and 67,988.99 is: 101,912.71
Step by Step Solution
- Step 1: Write the proportion equation
121,375.28 : 181,936.58 = 67,988.99 : x - Step 2: Convert to fraction form
121,375.28/181,936.58 = 67,988.99/x - Step 3: Cross multiply
121,375.28x = 181,936.58 × 67,988.99 - Step 4: Simplify right side
121,375.28x = 12,369,683,408.57 - Step 5: Solve for x
x = 12,369,683,408.57/121,375.28 - Step 6: Final answer
x = 101,912.71
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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.