Finding the Fourth Proportional to 117,143.24, 161,536.84 and 100,203.56
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Solution
The fourth proportional to 117,143.24, 161,536.84 and 100,203.56 is: 138,177.55
Step by Step Solution
- Step 1: Write the proportion equation
117,143.24 : 161,536.84 = 100,203.56 : x - Step 2: Convert to fraction form
117,143.24/161,536.84 = 100,203.56/x - Step 3: Cross multiply
117,143.24x = 161,536.84 × 100,203.56 - Step 4: Simplify right side
117,143.24x = 16,186,566,439.15 - Step 5: Solve for x
x = 16,186,566,439.15/117,143.24 - Step 6: Final answer
x = 138,177.55
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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.