Finding the Fourth Proportional to 140,539.28, 193,943.36 and 80,112.48
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Solution
The fourth proportional to 140,539.28, 193,943.36 and 80,112.48 is: 110,554.74
Step by Step Solution
- Step 1: Write the proportion equation
140,539.28 : 193,943.36 = 80,112.48 : x - Step 2: Convert to fraction form
140,539.28/193,943.36 = 80,112.48/x - Step 3: Cross multiply
140,539.28x = 193,943.36 × 80,112.48 - Step 4: Simplify right side
140,539.28x = 15,537,283,549.13 - Step 5: Solve for x
x = 15,537,283,549.13/140,539.28 - Step 6: Final answer
x = 110,554.74
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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.