Finding the Fourth Proportional to 139,696.73, 192,781.47 and 76,034.99
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Solution
The fourth proportional to 139,696.73, 192,781.47 and 76,034.99 is: 104,928.28
Step by Step Solution
- Step 1: Write the proportion equation
139,696.73 : 192,781.47 = 76,034.99 : x - Step 2: Convert to fraction form
139,696.73/192,781.47 = 76,034.99/x - Step 3: Cross multiply
139,696.73x = 192,781.47 × 76,034.99 - Step 4: Simplify right side
139,696.73x = 14,658,137,143.64 - Step 5: Solve for x
x = 14,658,137,143.64/139,696.73 - Step 6: Final answer
x = 104,928.28
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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.