Finding the Fourth Proportional to 128,366.73, 177,154.26 and 71,778.09
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Solution
The fourth proportional to 128,366.73, 177,154.26 and 71,778.09 is: 99,058.33
Step by Step Solution
- Step 1: Write the proportion equation
128,366.73 : 177,154.26 = 71,778.09 : x - Step 2: Convert to fraction form
128,366.73/177,154.26 = 71,778.09/x - Step 3: Cross multiply
128,366.73x = 177,154.26 × 71,778.09 - Step 4: Simplify right side
128,366.73x = 12,715,794,418.16 - Step 5: Solve for x
x = 12,715,794,418.16/128,366.73 - Step 6: Final answer
x = 99,058.33
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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.