Finding the Fourth Proportional to 129,611.10, 194,398.19 and 40,853.07
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Solution
The fourth proportional to 129,611.10, 194,398.19 and 40,853.07 is: 61,273.79
Step by Step Solution
- Step 1: Write the proportion equation
129,611.10 : 194,398.19 = 40,853.07 : x - Step 2: Convert to fraction form
129,611.10/194,398.19 = 40,853.07/x - Step 3: Cross multiply
129,611.10x = 194,398.19 × 40,853.07 - Step 4: Simplify right side
129,611.10x = 7,941,762,966.08 - Step 5: Solve for x
x = 7,941,762,966.08/129,611.10 - Step 6: Final answer
x = 61,273.79
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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.