Finding the Fourth Proportional to 171,981.36, 257,905.62 and 66,786.12
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Solution
The fourth proportional to 171,981.36, 257,905.62 and 66,786.12 is: 100,153.39
Step by Step Solution
- Step 1: Write the proportion equation
171,981.36 : 257,905.62 = 66,786.12 : x - Step 2: Convert to fraction form
171,981.36/257,905.62 = 66,786.12/x - Step 3: Cross multiply
171,981.36x = 257,905.62 × 66,786.12 - Step 4: Simplify right side
171,981.36x = 17,224,515,685.99 - Step 5: Solve for x
x = 17,224,515,685.99/171,981.36 - Step 6: Final answer
x = 100,153.39
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.