Finding the Fourth Proportional to 126,943.70, 190,415.55 and 74,455.70
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Solution
The fourth proportional to 126,943.70, 190,415.55 and 74,455.70 is: 111,683.55
Step by Step Solution
- Step 1: Write the proportion equation
126,943.70 : 190,415.55 = 74,455.70 : x - Step 2: Convert to fraction form
126,943.70/190,415.55 = 74,455.70/x - Step 3: Cross multiply
126,943.70x = 190,415.55 × 74,455.70 - Step 4: Simplify right side
126,943.70x = 14,177,523,066.14 - Step 5: Solve for x
x = 14,177,523,066.14/126,943.70 - Step 6: Final answer
x = 111,683.55
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1.5x scale
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.