Finding the Fourth Proportional to 155,781.08, 214,977.99 and 84,161.07
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Solution
The fourth proportional to 155,781.08, 214,977.99 and 84,161.07 is: 116,142.33
Step by Step Solution
- Step 1: Write the proportion equation
155,781.08 : 214,977.99 = 84,161.07 : x - Step 2: Convert to fraction form
155,781.08/214,977.99 = 84,161.07/x - Step 3: Cross multiply
155,781.08x = 214,977.99 × 84,161.07 - Step 4: Simplify right side
155,781.08x = 18,092,777,664.85 - Step 5: Solve for x
x = 18,092,777,664.85/155,781.08 - Step 6: Final answer
x = 116,142.33
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1.5x scale
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.