Finding the Fourth Proportional to 139,478.84, 192,474.48 and 79,045.96
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Solution
The fourth proportional to 139,478.84, 192,474.48 and 79,045.96 is: 109,079.84
Step by Step Solution
- Step 1: Write the proportion equation
139,478.84 : 192,474.48 = 79,045.96 : x - Step 2: Convert to fraction form
139,478.84/192,474.48 = 79,045.96/x - Step 3: Cross multiply
139,478.84x = 192,474.48 × 79,045.96 - Step 4: Simplify right side
139,478.84x = 15,214,330,047.10 - Step 5: Solve for x
x = 15,214,330,047.10/139,478.84 - Step 6: Final answer
x = 109,079.84
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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.