Finding the Fourth Proportional to 138,126.75, 207,222.27 and 43,351.74
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Solution
The fourth proportional to 138,126.75, 207,222.27 and 43,351.74 is: 65,037.70
Step by Step Solution
- Step 1: Write the proportion equation
138,126.75 : 207,222.27 = 43,351.74 : x - Step 2: Convert to fraction form
138,126.75/207,222.27 = 43,351.74/x - Step 3: Cross multiply
138,126.75x = 207,222.27 × 43,351.74 - Step 4: Simplify right side
138,126.75x = 8,983,445,971.25 - Step 5: Solve for x
x = 8,983,445,971.25/138,126.75 - Step 6: Final answer
x = 65,037.70
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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.