Finding the Fourth Proportional to 129,479.40, 193,927.50 and 66,318.84
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Solution
The fourth proportional to 129,479.40, 193,927.50 and 66,318.84 is: 99,328.90
Step by Step Solution
- Step 1: Write the proportion equation
129,479.40 : 193,927.50 = 66,318.84 : x - Step 2: Convert to fraction form
129,479.40/193,927.50 = 66,318.84/x - Step 3: Cross multiply
129,479.40x = 193,927.50 × 66,318.84 - Step 4: Simplify right side
129,479.40x = 12,861,046,844.10 - Step 5: Solve for x
x = 12,861,046,844.10/129,479.40 - Step 6: Final answer
x = 99,328.90
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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.