Finding the Fourth Proportional to 121,762.80, 182,644.20 and 117,097.20
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Solution
The fourth proportional to 121,762.80, 182,644.20 and 117,097.20 is: 175,645.80
Step by Step Solution
- Step 1: Write the proportion equation
121,762.80 : 182,644.20 = 117,097.20 : x - Step 2: Convert to fraction form
121,762.80/182,644.20 = 117,097.20/x - Step 3: Cross multiply
121,762.80x = 182,644.20 × 117,097.20 - Step 4: Simplify right side
121,762.80x = 21,387,124,416.24 - Step 5: Solve for x
x = 21,387,124,416.24/121,762.80 - Step 6: Final answer
x = 175,645.80
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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.