Finding the Fourth Proportional to 135,731.96, 187,245.14 and 81,246.96
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Solution
The fourth proportional to 135,731.96, 187,245.14 and 81,246.96 is: 112,081.92
Step by Step Solution
- Step 1: Write the proportion equation
135,731.96 : 187,245.14 = 81,246.96 : x - Step 2: Convert to fraction form
135,731.96/187,245.14 = 81,246.96/x - Step 3: Cross multiply
135,731.96x = 187,245.14 × 81,246.96 - Step 4: Simplify right side
135,731.96x = 15,213,098,399.77 - Step 5: Solve for x
x = 15,213,098,399.77/135,731.96 - Step 6: Final answer
x = 112,081.92
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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.