Finding the Fourth Proportional to 125,684.28, 173,448.18 and 71,986.68
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Solution
The fourth proportional to 125,684.28, 173,448.18 and 71,986.68 is: 99,343.84
Step by Step Solution
- Step 1: Write the proportion equation
125,684.28 : 173,448.18 = 71,986.68 : x - Step 2: Convert to fraction form
125,684.28/173,448.18 = 71,986.68/x - Step 3: Cross multiply
125,684.28x = 173,448.18 × 71,986.68 - Step 4: Simplify right side
125,684.28x = 12,485,958,630.24 - Step 5: Solve for x
x = 12,485,958,630.24/125,684.28 - Step 6: Final answer
x = 99,343.84
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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.