Finding the Fourth Proportional to 129,313.86, 193,970.79 and 40,574.46
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Solution
The fourth proportional to 129,313.86, 193,970.79 and 40,574.46 is: 60,861.69
Step by Step Solution
- Step 1: Write the proportion equation
129,313.86 : 193,970.79 = 40,574.46 : x - Step 2: Convert to fraction form
129,313.86/193,970.79 = 40,574.46/x - Step 3: Cross multiply
129,313.86x = 193,970.79 × 40,574.46 - Step 4: Simplify right side
129,313.86x = 7,870,260,060.02 - Step 5: Solve for x
x = 7,870,260,060.02/129,313.86 - Step 6: Final answer
x = 60,861.69
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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.