Finding the Fourth Proportional to 102,163.59, 140,983.07 and 56,841.66
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Solution
The fourth proportional to 102,163.59, 140,983.07 and 56,841.66 is: 78,439.99
Step by Step Solution
- Step 1: Write the proportion equation
102,163.59 : 140,983.07 = 56,841.66 : x - Step 2: Convert to fraction form
102,163.59/140,983.07 = 56,841.66/x - Step 3: Cross multiply
102,163.59x = 140,983.07 × 56,841.66 - Step 4: Simplify right side
102,163.59x = 8,013,711,446.49 - Step 5: Solve for x
x = 8,013,711,446.49/102,163.59 - Step 6: Final answer
x = 78,439.99
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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.