Finding the Fourth Proportional to 139,274.99, 192,201.76 and 78,844.08
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Solution
The fourth proportional to 139,274.99, 192,201.76 and 78,844.08 is: 108,806.12
Step by Step Solution
- Step 1: Write the proportion equation
139,274.99 : 192,201.76 = 78,844.08 : x - Step 2: Convert to fraction form
139,274.99/192,201.76 = 78,844.08/x - Step 3: Cross multiply
139,274.99x = 192,201.76 × 78,844.08 - Step 4: Simplify right side
139,274.99x = 15,153,971,760.89 - Step 5: Solve for x
x = 15,153,971,760.89/139,274.99 - Step 6: Final answer
x = 108,806.12
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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.