Finding the Fourth Proportional to 113,868.36, 157,191.57 and 66,112.38
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Solution
The fourth proportional to 113,868.36, 157,191.57 and 66,112.38 is: 91,265.99
Step by Step Solution
- Step 1: Write the proportion equation
113,868.36 : 157,191.57 = 66,112.38 : x - Step 2: Convert to fraction form
113,868.36/157,191.57 = 66,112.38/x - Step 3: Cross multiply
113,868.36x = 157,191.57 × 66,112.38 - Step 4: Simplify right side
113,868.36x = 10,392,308,808.64 - Step 5: Solve for x
x = 10,392,308,808.64/113,868.36 - Step 6: Final answer
x = 91,265.99
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1.5x scale
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.