Finding the Fourth Proportional to 189,415.79, 261,438.47 and 108,889.98
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Solution
The fourth proportional to 189,415.79, 261,438.47 and 108,889.98 is: 150,293.85
Step by Step Solution
- Step 1: Write the proportion equation
189,415.79 : 261,438.47 = 108,889.98 : x - Step 2: Convert to fraction form
189,415.79/261,438.47 = 108,889.98/x - Step 3: Cross multiply
189,415.79x = 261,438.47 × 108,889.98 - Step 4: Simplify right side
189,415.79x = 28,468,027,917.89 - Step 5: Solve for x
x = 28,468,027,917.89/189,415.79 - Step 6: Final answer
x = 150,293.85
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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.