Finding the Fourth Proportional to 117,431.80, 176,147.70 and 115,487.80
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Solution
The fourth proportional to 117,431.80, 176,147.70 and 115,487.80 is: 173,231.70
Step by Step Solution
- Step 1: Write the proportion equation
117,431.80 : 176,147.70 = 115,487.80 : x - Step 2: Convert to fraction form
117,431.80/176,147.70 = 115,487.80/x - Step 3: Cross multiply
117,431.80x = 176,147.70 × 115,487.80 - Step 4: Simplify right side
117,431.80x = 20,342,910,348.06 - Step 5: Solve for x
x = 20,342,910,348.06/117,431.80 - Step 6: Final answer
x = 173,231.70
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1.5x scale
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.