Finding the Fourth Proportional to 113,803.24, 157,076.58 and 69,128.68
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Solution
The fourth proportional to 113,803.24, 157,076.58 and 69,128.68 is: 95,414.65
Step by Step Solution
- Step 1: Write the proportion equation
113,803.24 : 157,076.58 = 69,128.68 : x - Step 2: Convert to fraction form
113,803.24/157,076.58 = 69,128.68/x - Step 3: Cross multiply
113,803.24x = 157,076.58 × 69,128.68 - Step 4: Simplify right side
113,803.24x = 10,858,496,634.31 - Step 5: Solve for x
x = 10,858,496,634.31/113,803.24 - Step 6: Final answer
x = 95,414.65
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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.