Finding the Fourth Proportional to 129,907.80, 194,861.70 and 63,313.65
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Solution
The fourth proportional to 129,907.80, 194,861.70 and 63,313.65 is: 94,970.48
Step by Step Solution
- Step 1: Write the proportion equation
129,907.80 : 194,861.70 = 63,313.65 : x - Step 2: Convert to fraction form
129,907.80/194,861.70 = 63,313.65/x - Step 3: Cross multiply
129,907.80x = 194,861.70 × 63,313.65 - Step 4: Simplify right side
129,907.80x = 12,337,405,472.21 - Step 5: Solve for x
x = 12,337,405,472.21/129,907.80 - Step 6: Final answer
x = 94,970.48
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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.