Finding the Fourth Proportional to 138,471.12, 207,506.16 and 75,237.60
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Solution
The fourth proportional to 138,471.12, 207,506.16 and 75,237.60 is: 112,747.45
Step by Step Solution
- Step 1: Write the proportion equation
138,471.12 : 207,506.16 = 75,237.60 : x - Step 2: Convert to fraction form
138,471.12/207,506.16 = 75,237.60/x - Step 3: Cross multiply
138,471.12x = 207,506.16 × 75,237.60 - Step 4: Simplify right side
138,471.12x = 15,612,265,463.62 - Step 5: Solve for x
x = 15,612,265,463.62/138,471.12 - Step 6: Final answer
x = 112,747.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.