Finding the Fourth Proportional to 121,461.91, 167,617.69 and 67,745.54
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Solution
The fourth proportional to 121,461.91, 167,617.69 and 67,745.54 is: 93,488.99
Step by Step Solution
- Step 1: Write the proportion equation
121,461.91 : 167,617.69 = 67,745.54 : x - Step 2: Convert to fraction form
121,461.91/167,617.69 = 67,745.54/x - Step 3: Cross multiply
121,461.91x = 167,617.69 × 67,745.54 - Step 4: Simplify right side
121,461.91x = 11,355,351,172.28 - Step 5: Solve for x
x = 11,355,351,172.28/121,461.91 - Step 6: Final answer
x = 93,488.99
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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.