Finding the Fourth Proportional to 13,168,125.42, 18,171,721.49 and 7,207,502.03
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Solution
The fourth proportional to 13,168,125.42, 18,171,721.49 and 7,207,502.03 is: 9,946,193.20
Step by Step Solution
- Step 1: Write the proportion equation
13,168,125.42 : 18,171,721.49 = 7,207,502.03 : x - Step 2: Convert to fraction form
13,168,125.42/18,171,721.49 = 7,207,502.03/x - Step 3: Cross multiply
13,168,125.42x = 18,171,721.49 × 7,207,502.03 - Step 4: Simplify right side
13,168,125.42x = 130,972,719,560,665.83 - Step 5: Solve for x
x = 130,972,719,560,665.83/13,168,125.42 - Step 6: Final answer
x = 9,946,193.20
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.