Finding the Fourth Proportional to 140,438.28, 193,757.49 and 79,966.14
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Solution
The fourth proportional to 140,438.28, 193,757.49 and 79,966.14 is: 110,326.32
Step by Step Solution
- Step 1: Write the proportion equation
140,438.28 : 193,757.49 = 79,966.14 : x - Step 2: Convert to fraction form
140,438.28/193,757.49 = 79,966.14/x - Step 3: Cross multiply
140,438.28x = 193,757.49 × 79,966.14 - Step 4: Simplify right side
140,438.28x = 15,494,038,571.39 - Step 5: Solve for x
x = 15,494,038,571.39/140,438.28 - Step 6: Final answer
x = 110,326.32
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1.5x scale
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.