Finding the Fourth Proportional to 157,832.10, 217,813.53 and 86,218.80
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Solution
The fourth proportional to 157,832.10, 217,813.53 and 86,218.80 is: 118,984.80
Step by Step Solution
- Step 1: Write the proportion equation
157,832.10 : 217,813.53 = 86,218.80 : x - Step 2: Convert to fraction form
157,832.10/217,813.53 = 86,218.80/x - Step 3: Cross multiply
157,832.10x = 217,813.53 × 86,218.80 - Step 4: Simplify right side
157,832.10x = 18,779,621,180.36 - Step 5: Solve for x
x = 18,779,621,180.36/157,832.10 - Step 6: Final answer
x = 118,984.80
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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.