Finding the Fourth Proportional to 125,137.91, 172,551.94 and 79,743.99
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Solution
The fourth proportional to 125,137.91, 172,551.94 and 79,743.99 is: 109,958.52
Step by Step Solution
- Step 1: Write the proportion equation
125,137.91 : 172,551.94 = 79,743.99 : x - Step 2: Convert to fraction form
125,137.91/172,551.94 = 79,743.99/x - Step 3: Cross multiply
125,137.91x = 172,551.94 × 79,743.99 - Step 4: Simplify right side
125,137.91x = 13,759,978,916.36 - Step 5: Solve for x
x = 13,759,978,916.36/125,137.91 - Step 6: Final answer
x = 109,958.52
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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.