Finding the Fourth Proportional to 117,115.11, 161,617.51 and 63,398.95
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Solution
The fourth proportional to 117,115.11, 161,617.51 and 63,398.95 is: 87,489.82
Step by Step Solution
- Step 1: Write the proportion equation
117,115.11 : 161,617.51 = 63,398.95 : x - Step 2: Convert to fraction form
117,115.11/161,617.51 = 63,398.95/x - Step 3: Cross multiply
117,115.11x = 161,617.51 × 63,398.95 - Step 4: Simplify right side
117,115.11x = 10,246,380,110.82 - Step 5: Solve for x
x = 10,246,380,110.82/117,115.11 - Step 6: Final answer
x = 87,489.82
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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.