Finding the Fourth Proportional to 128,525.26, 192,796.90 and 39,767.08
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Solution
The fourth proportional to 128,525.26, 192,796.90 and 39,767.08 is: 59,653.41
Step by Step Solution
- Step 1: Write the proportion equation
128,525.26 : 192,796.90 = 39,767.08 : x - Step 2: Convert to fraction form
128,525.26/192,796.90 = 39,767.08/x - Step 3: Cross multiply
128,525.26x = 192,796.90 × 39,767.08 - Step 4: Simplify right side
128,525.26x = 7,666,969,746.05 - Step 5: Solve for x
x = 7,666,969,746.05/128,525.26 - Step 6: Final answer
x = 59,653.41
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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.