Finding the Fourth Proportional to 138,701.70, 208,052.55 and 132,869.70
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Solution
The fourth proportional to 138,701.70, 208,052.55 and 132,869.70 is: 199,304.55
Step by Step Solution
- Step 1: Write the proportion equation
138,701.70 : 208,052.55 = 132,869.70 : x - Step 2: Convert to fraction form
138,701.70/208,052.55 = 132,869.70/x - Step 3: Cross multiply
138,701.70x = 208,052.55 × 132,869.70 - Step 4: Simplify right side
138,701.70x = 27,643,879,902.74 - Step 5: Solve for x
x = 27,643,879,902.74/138,701.70 - Step 6: Final answer
x = 199,304.55
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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.