Finding the Fourth Proportional to 106,939.81, 147,609.84 and 61,648.09
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Solution
The fourth proportional to 106,939.81, 147,609.84 and 61,648.09 is: 85,093.32
Step by Step Solution
- Step 1: Write the proportion equation
106,939.81 : 147,609.84 = 61,648.09 : x - Step 2: Convert to fraction form
106,939.81/147,609.84 = 61,648.09/x - Step 3: Cross multiply
106,939.81x = 147,609.84 × 61,648.09 - Step 4: Simplify right side
106,939.81x = 9,099,863,963.16 - Step 5: Solve for x
x = 9,099,863,963.16/106,939.81 - Step 6: Final answer
x = 85,093.32
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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.