Finding the Fourth Proportional to 128,489.09, 192,622.77 and 61,837.52
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Solution
The fourth proportional to 128,489.09, 192,622.77 and 61,837.52 is: 92,702.92
Step by Step Solution
- Step 1: Write the proportion equation
128,489.09 : 192,622.77 = 61,837.52 : x - Step 2: Convert to fraction form
128,489.09/192,622.77 = 61,837.52/x - Step 3: Cross multiply
128,489.09x = 192,622.77 × 61,837.52 - Step 4: Simplify right side
128,489.09x = 11,911,313,429.22 - Step 5: Solve for x
x = 11,911,313,429.22/128,489.09 - Step 6: Final answer
x = 92,702.92
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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.