Finding the Fourth Proportional to 136,090.20, 204,135.30 and 121,315.80
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Solution
The fourth proportional to 136,090.20, 204,135.30 and 121,315.80 is: 181,973.70
Step by Step Solution
- Step 1: Write the proportion equation
136,090.20 : 204,135.30 = 121,315.80 : x - Step 2: Convert to fraction form
136,090.20/204,135.30 = 121,315.80/x - Step 3: Cross multiply
136,090.20x = 204,135.30 × 121,315.80 - Step 4: Simplify right side
136,090.20x = 24,764,837,227.74 - Step 5: Solve for x
x = 24,764,837,227.74/136,090.20 - Step 6: Final answer
x = 181,973.70
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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.