Finding the Fourth Proportional to 157,832.13, 217,808.10 and 86,212.17
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Solution
The fourth proportional to 157,832.13, 217,808.10 and 86,212.17 is: 118,972.66
Step by Step Solution
- Step 1: Write the proportion equation
157,832.13 : 217,808.10 = 86,212.17 : x - Step 2: Convert to fraction form
157,832.13/217,808.10 = 86,212.17/x - Step 3: Cross multiply
157,832.13x = 217,808.10 × 86,212.17 - Step 4: Simplify right side
157,832.13x = 18,777,708,944.58 - Step 5: Solve for x
x = 18,777,708,944.58/157,832.13 - Step 6: Final answer
x = 118,972.66
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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.