Finding the Fourth Proportional to 117,635.20, 176,452.80 and 91,420.80
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Solution
The fourth proportional to 117,635.20, 176,452.80 and 91,420.80 is: 137,131.20
Step by Step Solution
- Step 1: Write the proportion equation
117,635.20 : 176,452.80 = 91,420.80 : x - Step 2: Convert to fraction form
117,635.20/176,452.80 = 91,420.80/x - Step 3: Cross multiply
117,635.20x = 176,452.80 × 91,420.80 - Step 4: Simplify right side
117,635.20x = 16,131,456,138.24 - Step 5: Solve for x
x = 16,131,456,138.24/117,635.20 - Step 6: Final answer
x = 137,131.20
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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.