Finding the Fourth Proportional to 116,686.21, 161,029.01 and 68,939.44
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Solution
The fourth proportional to 116,686.21, 161,029.01 and 68,939.44 is: 95,137.63
Step by Step Solution
- Step 1: Write the proportion equation
116,686.21 : 161,029.01 = 68,939.44 : x - Step 2: Convert to fraction form
116,686.21/161,029.01 = 68,939.44/x - Step 3: Cross multiply
116,686.21x = 161,029.01 × 68,939.44 - Step 4: Simplify right side
116,686.21x = 11,101,249,773.15 - Step 5: Solve for x
x = 11,101,249,773.15/116,686.21 - Step 6: Final answer
x = 95,137.63
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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.