Finding the Fourth Proportional to 139,223.99, 208,786.17 and 54,980.75
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Solution
The fourth proportional to 139,223.99, 208,786.17 and 54,980.75 is: 82,451.45
Step by Step Solution
- Step 1: Write the proportion equation
139,223.99 : 208,786.17 = 54,980.75 : x - Step 2: Convert to fraction form
139,223.99/208,786.17 = 54,980.75/x - Step 3: Cross multiply
139,223.99x = 208,786.17 × 54,980.75 - Step 4: Simplify right side
139,223.99x = 11,479,220,216.23 - Step 5: Solve for x
x = 11,479,220,216.23/139,223.99 - Step 6: Final answer
x = 82,451.45
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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.