Finding the Fourth Proportional to 135,432.09, 186,846.09 and 87,711.75
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Solution
The fourth proportional to 135,432.09, 186,846.09 and 87,711.75 is: 121,009.71
Step by Step Solution
- Step 1: Write the proportion equation
135,432.09 : 186,846.09 = 87,711.75 : x - Step 2: Convert to fraction form
135,432.09/186,846.09 = 87,711.75/x - Step 3: Cross multiply
135,432.09x = 186,846.09 × 87,711.75 - Step 4: Simplify right side
135,432.09x = 16,388,597,534.56 - Step 5: Solve for x
x = 16,388,597,534.56/135,432.09 - Step 6: Final answer
x = 121,009.71
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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.