Finding the Fourth Proportional to 127,629.77, 176,139.47 and 71,042.09
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Solution
The fourth proportional to 127,629.77, 176,139.47 and 71,042.09 is: 98,043.86
Step by Step Solution
- Step 1: Write the proportion equation
127,629.77 : 176,139.47 = 71,042.09 : x - Step 2: Convert to fraction form
127,629.77/176,139.47 = 71,042.09/x - Step 3: Cross multiply
127,629.77x = 176,139.47 × 71,042.09 - Step 4: Simplify right side
127,629.77x = 12,513,315,377.20 - Step 5: Solve for x
x = 12,513,315,377.20/127,629.77 - Step 6: Final answer
x = 98,043.86
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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.