Finding the Fourth Proportional to 135,884.99, 187,538.58 and 82,170.40
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Solution
The fourth proportional to 135,884.99, 187,538.58 and 82,170.40 is: 113,405.60
Step by Step Solution
- Step 1: Write the proportion equation
135,884.99 : 187,538.58 = 82,170.40 : x - Step 2: Convert to fraction form
135,884.99/187,538.58 = 82,170.40/x - Step 3: Cross multiply
135,884.99x = 187,538.58 × 82,170.40 - Step 4: Simplify right side
135,884.99x = 15,410,119,196.34 - Step 5: Solve for x
x = 15,410,119,196.34/135,884.99 - Step 6: Final answer
x = 113,405.60
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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.