Finding the Fourth Proportional to 125,137.68, 172,647.75 and 71,384.85
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Solution
The fourth proportional to 125,137.68, 172,647.75 and 71,384.85 is: 98,486.99
Step by Step Solution
- Step 1: Write the proportion equation
125,137.68 : 172,647.75 = 71,384.85 : x - Step 2: Convert to fraction form
125,137.68/172,647.75 = 71,384.85/x - Step 3: Cross multiply
125,137.68x = 172,647.75 × 71,384.85 - Step 4: Simplify right side
125,137.68x = 12,324,433,736.59 - Step 5: Solve for x
x = 12,324,433,736.59/125,137.68 - Step 6: Final answer
x = 98,486.99
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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.