Finding the Fourth Proportional to 121,497.60, 182,246.40 and 107,571.20
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Solution
The fourth proportional to 121,497.60, 182,246.40 and 107,571.20 is: 161,356.80
Step by Step Solution
- Step 1: Write the proportion equation
121,497.60 : 182,246.40 = 107,571.20 : x - Step 2: Convert to fraction form
121,497.60/182,246.40 = 107,571.20/x - Step 3: Cross multiply
121,497.60x = 182,246.40 × 107,571.20 - Step 4: Simplify right side
121,497.60x = 19,604,463,943.68 - Step 5: Solve for x
x = 19,604,463,943.68/121,497.60 - Step 6: Final answer
x = 161,356.80
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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.