Finding the Fourth Proportional to 121,542.40, 169,765.70 and 121,542.40
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Solution
The fourth proportional to 121,542.40, 169,765.70 and 121,542.40 is: 169,765.70
Step by Step Solution
- Step 1: Write the proportion equation
121,542.40 : 169,765.70 = 121,542.40 : x - Step 2: Convert to fraction form
121,542.40/169,765.70 = 121,542.40/x - Step 3: Cross multiply
121,542.40x = 169,765.70 × 121,542.40 - Step 4: Simplify right side
121,542.40x = 20,633,730,615.68 - Step 5: Solve for x
x = 20,633,730,615.68/121,542.40 - Step 6: Final answer
x = 169,765.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.