Finding the Fourth Proportional to 189,245.84, 261,155.97 and 103,205.49
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Solution
The fourth proportional to 189,245.84, 261,155.97 and 103,205.49 is: 142,421.78
Step by Step Solution
- Step 1: Write the proportion equation
189,245.84 : 261,155.97 = 103,205.49 : x - Step 2: Convert to fraction form
189,245.84/261,155.97 = 103,205.49/x - Step 3: Cross multiply
189,245.84x = 261,155.97 × 103,205.49 - Step 4: Simplify right side
189,245.84x = 26,952,730,630.21 - Step 5: Solve for x
x = 26,952,730,630.21/189,245.84 - Step 6: Final answer
x = 142,421.78
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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.