Finding the Fourth Proportional to 138,874.26, 191,647.08 and 75,212.13
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Solution
The fourth proportional to 138,874.26, 191,647.08 and 75,212.13 is: 103,793.07
Step by Step Solution
- Step 1: Write the proportion equation
138,874.26 : 191,647.08 = 75,212.13 : x - Step 2: Convert to fraction form
138,874.26/191,647.08 = 75,212.13/x - Step 3: Cross multiply
138,874.26x = 191,647.08 × 75,212.13 - Step 4: Simplify right side
138,874.26x = 14,414,185,095.08 - Step 5: Solve for x
x = 14,414,185,095.08/138,874.26 - Step 6: Final answer
x = 103,793.07
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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.