Finding the Fourth Proportional to 139,739.88, 192,808.24 and 79,296.88
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Solution
The fourth proportional to 139,739.88, 192,808.24 and 79,296.88 is: 109,411.08
Step by Step Solution
- Step 1: Write the proportion equation
139,739.88 : 192,808.24 = 79,296.88 : x - Step 2: Convert to fraction form
139,739.88/192,808.24 = 79,296.88/x - Step 3: Cross multiply
139,739.88x = 192,808.24 × 79,296.88 - Step 4: Simplify right side
139,739.88x = 15,289,091,870.29 - Step 5: Solve for x
x = 15,289,091,870.29/139,739.88 - Step 6: Final answer
x = 109,411.08
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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.