Finding the Fourth Proportional to 100,160.49, 138,215.99 and 54,829.70
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Solution
The fourth proportional to 100,160.49, 138,215.99 and 54,829.70 is: 75,661.99
Step by Step Solution
- Step 1: Write the proportion equation
100,160.49 : 138,215.99 = 54,829.70 : x - Step 2: Convert to fraction form
100,160.49/138,215.99 = 54,829.70/x - Step 3: Cross multiply
100,160.49x = 138,215.99 × 54,829.70 - Step 4: Simplify right side
100,160.49x = 7,578,341,231.21 - Step 5: Solve for x
x = 7,578,341,231.21/100,160.49 - Step 6: Final answer
x = 75,661.99
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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.