Finding the Fourth Proportional to 137,838.20, 190,201.92 and 77,415.44
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Solution
The fourth proportional to 137,838.20, 190,201.92 and 77,415.44 is: 106,825.00
Step by Step Solution
- Step 1: Write the proportion equation
137,838.20 : 190,201.92 = 77,415.44 : x - Step 2: Convert to fraction form
137,838.20/190,201.92 = 77,415.44/x - Step 3: Cross multiply
137,838.20x = 190,201.92 × 77,415.44 - Step 4: Simplify right side
137,838.20x = 14,724,565,325.64 - Step 5: Solve for x
x = 14,724,565,325.64/137,838.20 - Step 6: Final answer
x = 106,825.00
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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.