Finding the Fourth Proportional to 135,736.68, 187,325.48 and 78,378.42
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Solution
The fourth proportional to 135,736.68, 187,325.48 and 78,378.42 is: 108,167.33
Step by Step Solution
- Step 1: Write the proportion equation
135,736.68 : 187,325.48 = 78,378.42 : x - Step 2: Convert to fraction form
135,736.68/187,325.48 = 78,378.42/x - Step 3: Cross multiply
135,736.68x = 187,325.48 × 78,378.42 - Step 4: Simplify right side
135,736.68x = 14,682,274,756.25 - Step 5: Solve for x
x = 14,682,274,756.25/135,736.68 - Step 6: Final answer
x = 108,167.33
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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.