Finding the Fourth Proportional to 100,261.14, 138,351.18 and 57,811.48
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Solution
The fourth proportional to 100,261.14, 138,351.18 and 57,811.48 is: 79,774.54
Step by Step Solution
- Step 1: Write the proportion equation
100,261.14 : 138,351.18 = 57,811.48 : x - Step 2: Convert to fraction form
100,261.14/138,351.18 = 57,811.48/x - Step 3: Cross multiply
100,261.14x = 138,351.18 × 57,811.48 - Step 4: Simplify right side
100,261.14x = 7,998,286,475.55 - Step 5: Solve for x
x = 7,998,286,475.55/100,261.14 - Step 6: Final answer
x = 79,774.54
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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.