Finding the Fourth Proportional to 163,691.40, 245,537.10 and 137,425.80
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Solution
The fourth proportional to 163,691.40, 245,537.10 and 137,425.80 is: 206,138.70
Step by Step Solution
- Step 1: Write the proportion equation
163,691.40 : 245,537.10 = 137,425.80 : x - Step 2: Convert to fraction form
163,691.40/245,537.10 = 137,425.80/x - Step 3: Cross multiply
163,691.40x = 245,537.10 × 137,425.80 - Step 4: Simplify right side
163,691.40x = 33,743,132,397.18 - Step 5: Solve for x
x = 33,743,132,397.18/163,691.40 - Step 6: Final answer
x = 206,138.70
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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.