Finding the Fourth Proportional to 128,758.24, 193,129.84 and 35,257.12
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Solution
The fourth proportional to 128,758.24, 193,129.84 and 35,257.12 is: 52,883.62
Step by Step Solution
- Step 1: Write the proportion equation
128,758.24 : 193,129.84 = 35,257.12 : x - Step 2: Convert to fraction form
128,758.24/193,129.84 = 35,257.12/x - Step 3: Cross multiply
128,758.24x = 193,129.84 × 35,257.12 - Step 4: Simplify right side
128,758.24x = 6,809,201,944.46 - Step 5: Solve for x
x = 6,809,201,944.46/128,758.24 - Step 6: Final answer
x = 52,883.62
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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.