Finding the Fourth Proportional to 128,135.68, 192,203.52 and 58,013.44
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Solution
The fourth proportional to 128,135.68, 192,203.52 and 58,013.44 is: 87,020.16
Step by Step Solution
- Step 1: Write the proportion equation
128,135.68 : 192,203.52 = 58,013.44 : x - Step 2: Convert to fraction form
128,135.68/192,203.52 = 58,013.44/x - Step 3: Cross multiply
128,135.68x = 192,203.52 × 58,013.44 - Step 4: Simplify right side
128,135.68x = 11,150,387,375.31 - Step 5: Solve for x
x = 11,150,387,375.31/128,135.68 - Step 6: Final answer
x = 87,020.16
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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.