Finding the Fourth Proportional to 126,306.80, 189,022.80 and 86,940.80
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Solution
The fourth proportional to 126,306.80, 189,022.80 and 86,940.80 is: 130,110.12
Step by Step Solution
- Step 1: Write the proportion equation
126,306.80 : 189,022.80 = 86,940.80 : x - Step 2: Convert to fraction form
126,306.80/189,022.80 = 86,940.80/x - Step 3: Cross multiply
126,306.80x = 189,022.80 × 86,940.80 - Step 4: Simplify right side
126,306.80x = 16,433,793,450.24 - Step 5: Solve for x
x = 16,433,793,450.24/126,306.80 - Step 6: Final answer
x = 130,110.12
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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.