Finding the Fourth Proportional to 137,650.05, 189,958.36 and 77,221.99
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Solution
The fourth proportional to 137,650.05, 189,958.36 and 77,221.99 is: 106,567.06
Step by Step Solution
- Step 1: Write the proportion equation
137,650.05 : 189,958.36 = 77,221.99 : x - Step 2: Convert to fraction form
137,650.05/189,958.36 = 77,221.99/x - Step 3: Cross multiply
137,650.05x = 189,958.36 × 77,221.99 - Step 4: Simplify right side
137,650.05x = 14,668,961,240.43 - Step 5: Solve for x
x = 14,668,961,240.43/137,650.05 - Step 6: Final answer
x = 106,567.06
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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.