Finding the Fourth Proportional to 200,197.62, 276,021.81 and 128,451.06
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Solution
The fourth proportional to 200,197.62, 276,021.81 and 128,451.06 is: 177,101.48
Step by Step Solution
- Step 1: Write the proportion equation
200,197.62 : 276,021.81 = 128,451.06 : x - Step 2: Convert to fraction form
200,197.62/276,021.81 = 128,451.06/x - Step 3: Cross multiply
200,197.62x = 276,021.81 × 128,451.06 - Step 4: Simplify right side
200,197.62x = 35,455,294,077.62 - Step 5: Solve for x
x = 35,455,294,077.62/200,197.62 - Step 6: Final answer
x = 177,101.48
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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.