Finding the Fourth Proportional to 138,562.23, 207,760.05 and 54,221.79
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Solution
The fourth proportional to 138,562.23, 207,760.05 and 54,221.79 is: 81,300.09
Step by Step Solution
- Step 1: Write the proportion equation
138,562.23 : 207,760.05 = 54,221.79 : x - Step 2: Convert to fraction form
138,562.23/207,760.05 = 54,221.79/x - Step 3: Cross multiply
138,562.23x = 207,760.05 × 54,221.79 - Step 4: Simplify right side
138,562.23x = 11,265,121,801.49 - Step 5: Solve for x
x = 11,265,121,801.49/138,562.23 - Step 6: Final answer
x = 81,300.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.