Finding the Fourth Proportional to 212,057.42, 292,707.43 and 135,781.92
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Solution
The fourth proportional to 212,057.42, 292,707.43 and 135,781.92 is: 187,422.72
Step by Step Solution
- Step 1: Write the proportion equation
212,057.42 : 292,707.43 = 135,781.92 : x - Step 2: Convert to fraction form
212,057.42/292,707.43 = 135,781.92/x - Step 3: Cross multiply
212,057.42x = 292,707.43 × 135,781.92 - Step 4: Simplify right side
212,057.42x = 39,744,376,504.21 - Step 5: Solve for x
x = 39,744,376,504.21/212,057.42 - Step 6: Final answer
x = 187,422.72
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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.