Finding the Fourth Proportional to 115,751.38, 159,682.92 and 74,928.70
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Solution
The fourth proportional to 115,751.38, 159,682.92 and 74,928.70 is: 103,366.66
Step by Step Solution
- Step 1: Write the proportion equation
115,751.38 : 159,682.92 = 74,928.70 : x - Step 2: Convert to fraction form
115,751.38/159,682.92 = 74,928.70/x - Step 3: Cross multiply
115,751.38x = 159,682.92 × 74,928.70 - Step 4: Simplify right side
115,751.38x = 11,964,833,607.80 - Step 5: Solve for x
x = 11,964,833,607.80/115,751.38 - Step 6: Final answer
x = 103,366.66
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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.