Finding the Fourth Proportional to 128,879.07, 193,201.95 and 45,753.63
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Solution
The fourth proportional to 128,879.07, 193,201.95 and 45,753.63 is: 68,589.03
Step by Step Solution
- Step 1: Write the proportion equation
128,879.07 : 193,201.95 = 45,753.63 : x - Step 2: Convert to fraction form
128,879.07/193,201.95 = 45,753.63/x - Step 3: Cross multiply
128,879.07x = 193,201.95 × 45,753.63 - Step 4: Simplify right side
128,879.07x = 8,839,690,535.58 - Step 5: Solve for x
x = 8,839,690,535.58/128,879.07 - Step 6: Final answer
x = 68,589.03
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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.