Finding the Fourth Proportional to 121,115.40, 169,699.80 and 121,115.40
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Solution
The fourth proportional to 121,115.40, 169,699.80 and 121,115.40 is: 169,699.80
Step by Step Solution
- Step 1: Write the proportion equation
121,115.40 : 169,699.80 = 121,115.40 : x - Step 2: Convert to fraction form
121,115.40/169,699.80 = 121,115.40/x - Step 3: Cross multiply
121,115.40x = 169,699.80 × 121,115.40 - Step 4: Simplify right side
121,115.40x = 20,553,259,156.92 - Step 5: Solve for x
x = 20,553,259,156.92/121,115.40 - Step 6: Final answer
x = 169,699.80
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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.