Finding the Fourth Proportional to 126,471.84, 174,451.50 and 81,102.12
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Solution
The fourth proportional to 126,471.84, 174,451.50 and 81,102.12 is: 111,869.86
Step by Step Solution
- Step 1: Write the proportion equation
126,471.84 : 174,451.50 = 81,102.12 : x - Step 2: Convert to fraction form
126,471.84/174,451.50 = 81,102.12/x - Step 3: Cross multiply
126,471.84x = 174,451.50 × 81,102.12 - Step 4: Simplify right side
126,471.84x = 14,148,386,487.18 - Step 5: Solve for x
x = 14,148,386,487.18/126,471.84 - Step 6: Final answer
x = 111,869.86
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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.