Finding the Fourth Proportional to 100,113.84, 138,157.20 and 54,793.71
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Solution
The fourth proportional to 100,113.84, 138,157.20 and 54,793.71 is: 75,615.37
Step by Step Solution
- Step 1: Write the proportion equation
100,113.84 : 138,157.20 = 54,793.71 : x - Step 2: Convert to fraction form
100,113.84/138,157.20 = 54,793.71/x - Step 3: Cross multiply
100,113.84x = 138,157.20 × 54,793.71 - Step 4: Simplify right side
100,113.84x = 7,570,145,551.21 - Step 5: Solve for x
x = 7,570,145,551.21/100,113.84 - Step 6: Final answer
x = 75,615.37
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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.