Finding the Fourth Proportional to 210,704.18, 316,056.60 and 86,045.18
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Solution
The fourth proportional to 210,704.18, 316,056.60 and 86,045.18 is: 129,067.90
Step by Step Solution
- Step 1: Write the proportion equation
210,704.18 : 316,056.60 = 86,045.18 : x - Step 2: Convert to fraction form
210,704.18/316,056.60 = 86,045.18/x - Step 3: Cross multiply
210,704.18x = 316,056.60 × 86,045.18 - Step 4: Simplify right side
210,704.18x = 27,195,147,037.19 - Step 5: Solve for x
x = 27,195,147,037.19/210,704.18 - Step 6: Final answer
x = 129,067.90
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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.