Finding the Fourth Proportional to 128,816.43, 193,257.35 and 40,070.60
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Solution
The fourth proportional to 128,816.43, 193,257.35 and 40,070.60 is: 60,116.07
Step by Step Solution
- Step 1: Write the proportion equation
128,816.43 : 193,257.35 = 40,070.60 : x - Step 2: Convert to fraction form
128,816.43/193,257.35 = 40,070.60/x - Step 3: Cross multiply
128,816.43x = 193,257.35 × 40,070.60 - Step 4: Simplify right side
128,816.43x = 7,743,937,968.91 - Step 5: Solve for x
x = 7,743,937,968.91/128,816.43 - Step 6: Final answer
x = 60,116.07
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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.