Finding the Fourth Proportional to 106,243.20, 159,364.80 and 91,468.80
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Solution
The fourth proportional to 106,243.20, 159,364.80 and 91,468.80 is: 137,203.20
Step by Step Solution
- Step 1: Write the proportion equation
106,243.20 : 159,364.80 = 91,468.80 : x - Step 2: Convert to fraction form
106,243.20/159,364.80 = 91,468.80/x - Step 3: Cross multiply
106,243.20x = 159,364.80 × 91,468.80 - Step 4: Simplify right side
106,243.20x = 14,576,907,018.24 - Step 5: Solve for x
x = 14,576,907,018.24/106,243.20 - Step 6: Final answer
x = 137,203.20
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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.