Finding the Fourth Proportional to 139,897.06, 193,057.95 and 76,234.84
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Solution
The fourth proportional to 139,897.06, 193,057.95 and 76,234.84 is: 105,204.08
Step by Step Solution
- Step 1: Write the proportion equation
139,897.06 : 193,057.95 = 76,234.84 : x - Step 2: Convert to fraction form
139,897.06/193,057.95 = 76,234.84/x - Step 3: Cross multiply
139,897.06x = 193,057.95 × 76,234.84 - Step 4: Simplify right side
139,897.06x = 14,717,741,928.98 - Step 5: Solve for x
x = 14,717,741,928.98/139,897.06 - Step 6: Final answer
x = 105,204.08
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1.5x scale
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.