Finding the Fourth Proportional to 207,712.99, 286,664.16 and 122,857.39
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Solution
The fourth proportional to 207,712.99, 286,664.16 and 122,857.39 is: 169,555.17
Step by Step Solution
- Step 1: Write the proportion equation
207,712.99 : 286,664.16 = 122,857.39 : x - Step 2: Convert to fraction form
207,712.99/286,664.16 = 122,857.39/x - Step 3: Cross multiply
207,712.99x = 286,664.16 × 122,857.39 - Step 4: Simplify right side
207,712.99x = 35,218,810,504.14 - Step 5: Solve for x
x = 35,218,810,504.14/207,712.99 - Step 6: Final answer
x = 169,555.17
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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.