Finding the Fourth Proportional to 139,901.24, 209,653.14 and 107,758.79
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Solution
The fourth proportional to 139,901.24, 209,653.14 and 107,758.79 is: 161,485.12
Step by Step Solution
- Step 1: Write the proportion equation
139,901.24 : 209,653.14 = 107,758.79 : x - Step 2: Convert to fraction form
139,901.24/209,653.14 = 107,758.79/x - Step 3: Cross multiply
139,901.24x = 209,653.14 × 107,758.79 - Step 4: Simplify right side
139,901.24x = 22,591,968,828.13 - Step 5: Solve for x
x = 22,591,968,828.13/139,901.24 - Step 6: Final answer
x = 161,485.12
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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.