Finding the Fourth Proportional to 138,747.20, 207,945.56 and 115,652.48
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Solution
The fourth proportional to 138,747.20, 207,945.56 and 115,652.48 is: 173,332.65
Step by Step Solution
- Step 1: Write the proportion equation
138,747.20 : 207,945.56 = 115,652.48 : x - Step 2: Convert to fraction form
138,747.20/207,945.56 = 115,652.48/x - Step 3: Cross multiply
138,747.20x = 207,945.56 × 115,652.48 - Step 4: Simplify right side
138,747.20x = 24,049,418,968.39 - Step 5: Solve for x
x = 24,049,418,968.39/138,747.20 - Step 6: Final answer
x = 173,332.65
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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.