Finding the Fourth Proportional to 143,358.68, 215,151.78 and 76,847.96
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Solution
The fourth proportional to 143,358.68, 215,151.78 and 76,847.96 is: 115,332.92
Step by Step Solution
- Step 1: Write the proportion equation
143,358.68 : 215,151.78 = 76,847.96 : x - Step 2: Convert to fraction form
143,358.68/215,151.78 = 76,847.96/x - Step 3: Cross multiply
143,358.68x = 215,151.78 × 76,847.96 - Step 4: Simplify right side
143,358.68x = 16,533,975,383.37 - Step 5: Solve for x
x = 16,533,975,383.37/143,358.68 - Step 6: Final answer
x = 115,332.92
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.