Finding the Fourth Proportional to 100,496.21, 138,685.01 and 55,177.11
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Solution
The fourth proportional to 100,496.21, 138,685.01 and 55,177.11 is: 76,144.54
Step by Step Solution
- Step 1: Write the proportion equation
100,496.21 : 138,685.01 = 55,177.11 : x - Step 2: Convert to fraction form
100,496.21/138,685.01 = 55,177.11/x - Step 3: Cross multiply
100,496.21x = 138,685.01 × 55,177.11 - Step 4: Simplify right side
100,496.21x = 7,652,237,776.24 - Step 5: Solve for x
x = 7,652,237,776.24/100,496.21 - Step 6: Final answer
x = 76,144.54
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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.