Finding the Fourth Proportional to 139,639.24, 192,703.34 and 79,210.00
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Solution
The fourth proportional to 139,639.24, 192,703.34 and 79,210.00 is: 109,310.47
Step by Step Solution
- Step 1: Write the proportion equation
139,639.24 : 192,703.34 = 79,210.00 : x - Step 2: Convert to fraction form
139,639.24/192,703.34 = 79,210.00/x - Step 3: Cross multiply
139,639.24x = 192,703.34 × 79,210.00 - Step 4: Simplify right side
139,639.24x = 15,264,030,201.83 - Step 5: Solve for x
x = 15,264,030,201.83/139,639.24 - Step 6: Final answer
x = 109,310.47
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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.