Finding the Fourth Proportional to 138,350.80, 207,526.20 and 122,021.20
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Solution
The fourth proportional to 138,350.80, 207,526.20 and 122,021.20 is: 183,031.80
Step by Step Solution
- Step 1: Write the proportion equation
138,350.80 : 207,526.20 = 122,021.20 : x - Step 2: Convert to fraction form
138,350.80/207,526.20 = 122,021.20/x - Step 3: Cross multiply
138,350.80x = 207,526.20 × 122,021.20 - Step 4: Simplify right side
138,350.80x = 25,322,595,955.44 - Step 5: Solve for x
x = 25,322,595,955.44/138,350.80 - Step 6: Final answer
x = 183,031.80
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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.