Finding the Fourth Proportional to 135,812.80, 203,719.20 and 124,139.20
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Solution
The fourth proportional to 135,812.80, 203,719.20 and 124,139.20 is: 186,208.80
Step by Step Solution
- Step 1: Write the proportion equation
135,812.80 : 203,719.20 = 124,139.20 : x - Step 2: Convert to fraction form
135,812.80/203,719.20 = 124,139.20/x - Step 3: Cross multiply
135,812.80x = 203,719.20 × 124,139.20 - Step 4: Simplify right side
135,812.80x = 25,289,538,512.64 - Step 5: Solve for x
x = 25,289,538,512.64/135,812.80 - Step 6: Final answer
x = 186,208.80
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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.