Finding the Fourth Proportional to 139,625.51, 207,858.97 and 138,795.13
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Solution
The fourth proportional to 139,625.51, 207,858.97 and 138,795.13 is: 206,622.79
Step by Step Solution
- Step 1: Write the proportion equation
139,625.51 : 207,858.97 = 138,795.13 : x - Step 2: Convert to fraction form
139,625.51/207,858.97 = 138,795.13/x - Step 3: Cross multiply
139,625.51x = 207,858.97 × 138,795.13 - Step 4: Simplify right side
139,625.51x = 28,849,812,762.82 - Step 5: Solve for x
x = 28,849,812,762.82/139,625.51 - Step 6: Final answer
x = 206,622.79
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.