Finding the Fourth Proportional to 157,808.08, 217,776.36 and 86,186.80
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Solution
The fourth proportional to 157,808.08, 217,776.36 and 86,186.80 is: 118,938.44
Step by Step Solution
- Step 1: Write the proportion equation
157,808.08 : 217,776.36 = 86,186.80 : x - Step 2: Convert to fraction form
157,808.08/217,776.36 = 86,186.80/x - Step 3: Cross multiply
157,808.08x = 217,776.36 × 86,186.80 - Step 4: Simplify right side
157,808.08x = 18,769,447,584.05 - Step 5: Solve for x
x = 18,769,447,584.05/157,808.08 - Step 6: Final answer
x = 118,938.44
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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.