Finding the Fourth Proportional to 139,430.16, 192,418.26 and 82,059.12
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Solution
The fourth proportional to 139,430.16, 192,418.26 and 82,059.12 is: 113,244.32
Step by Step Solution
- Step 1: Write the proportion equation
139,430.16 : 192,418.26 = 82,059.12 : x - Step 2: Convert to fraction form
139,430.16/192,418.26 = 82,059.12/x - Step 3: Cross multiply
139,430.16x = 192,418.26 × 82,059.12 - Step 4: Simplify right side
139,430.16x = 15,789,673,087.53 - Step 5: Solve for x
x = 15,789,673,087.53/139,430.16 - Step 6: Final answer
x = 113,244.32
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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.