Finding the Fourth Proportional to 126,426.84, 174,474.36 and 72,711.92
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Solution
The fourth proportional to 126,426.84, 174,474.36 and 72,711.92 is: 100,345.50
Step by Step Solution
- Step 1: Write the proportion equation
126,426.84 : 174,474.36 = 72,711.92 : x - Step 2: Convert to fraction form
126,426.84/174,474.36 = 72,711.92/x - Step 3: Cross multiply
126,426.84x = 174,474.36 × 72,711.92 - Step 4: Simplify right side
126,426.84x = 12,686,364,834.00 - Step 5: Solve for x
x = 12,686,364,834.00/126,426.84 - Step 6: Final answer
x = 100,345.50
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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.