Finding the Fourth Proportional to 136,984.36, 189,037.80 and 76,554.96
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Solution
The fourth proportional to 136,984.36, 189,037.80 and 76,554.96 is: 105,645.50
Step by Step Solution
- Step 1: Write the proportion equation
136,984.36 : 189,037.80 = 76,554.96 : x - Step 2: Convert to fraction form
136,984.36/189,037.80 = 76,554.96/x - Step 3: Cross multiply
136,984.36x = 189,037.80 × 76,554.96 - Step 4: Simplify right side
136,984.36x = 14,471,781,217.49 - Step 5: Solve for x
x = 14,471,781,217.49/136,984.36 - Step 6: Final answer
x = 105,645.50
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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.