Finding the Fourth Proportional to 138,276.75, 207,590.19 and 84,837.42
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Solution
The fourth proportional to 138,276.75, 207,590.19 and 84,837.42 is: 127,363.54
Step by Step Solution
- Step 1: Write the proportion equation
138,276.75 : 207,590.19 = 84,837.42 : x - Step 2: Convert to fraction form
138,276.75/207,590.19 = 84,837.42/x - Step 3: Cross multiply
138,276.75x = 207,590.19 × 84,837.42 - Step 4: Simplify right side
138,276.75x = 17,611,416,136.91 - Step 5: Solve for x
x = 17,611,416,136.91/138,276.75 - Step 6: Final answer
x = 127,363.54
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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.