Finding the Fourth Proportional to 199,826.09, 275,645.62 and 128,125.29
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Solution
The fourth proportional to 199,826.09, 275,645.62 and 128,125.29 is: 176,739.56
Step by Step Solution
- Step 1: Write the proportion equation
199,826.09 : 275,645.62 = 128,125.29 : x - Step 2: Convert to fraction form
199,826.09/275,645.62 = 128,125.29/x - Step 3: Cross multiply
199,826.09x = 275,645.62 × 128,125.29 - Step 4: Simplify right side
199,826.09x = 35,317,174,359.10 - Step 5: Solve for x
x = 35,317,174,359.10/199,826.09 - Step 6: Final answer
x = 176,739.56
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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.