Finding the Fourth Proportional to 128,906.18, 193,312.94 and 44,643.65
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Solution
The fourth proportional to 128,906.18, 193,312.94 and 44,643.65 is: 66,949.43
Step by Step Solution
- Step 1: Write the proportion equation
128,906.18 : 193,312.94 = 44,643.65 : x - Step 2: Convert to fraction form
128,906.18/193,312.94 = 44,643.65/x - Step 3: Cross multiply
128,906.18x = 193,312.94 × 44,643.65 - Step 4: Simplify right side
128,906.18x = 8,630,194,378.88 - Step 5: Solve for x
x = 8,630,194,378.88/128,906.18 - Step 6: Final answer
x = 66,949.43
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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.