Finding the Fourth Proportional to 115,494.13, 159,377.37 and 72,496.81
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Solution
The fourth proportional to 115,494.13, 159,377.37 and 72,496.81 is: 100,042.75
Step by Step Solution
- Step 1: Write the proportion equation
115,494.13 : 159,377.37 = 72,496.81 : x - Step 2: Convert to fraction form
115,494.13/159,377.37 = 72,496.81/x - Step 3: Cross multiply
115,494.13x = 159,377.37 × 72,496.81 - Step 4: Simplify right side
115,494.13x = 11,554,350,911.19 - Step 5: Solve for x
x = 11,554,350,911.19/115,494.13 - Step 6: Final answer
x = 100,042.75
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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.