Finding the Fourth Proportional to 139,218.21, 192,121.23 and 75,555.99
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Solution
The fourth proportional to 139,218.21, 192,121.23 and 75,555.99 is: 104,267.32
Step by Step Solution
- Step 1: Write the proportion equation
139,218.21 : 192,121.23 = 75,555.99 : x - Step 2: Convert to fraction form
139,218.21/192,121.23 = 75,555.99/x - Step 3: Cross multiply
139,218.21x = 192,121.23 × 75,555.99 - Step 4: Simplify right side
139,218.21x = 14,515,909,732.67 - Step 5: Solve for x
x = 14,515,909,732.67/139,218.21 - Step 6: Final answer
x = 104,267.32
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.