Finding the Fourth Proportional to 134,434.10, 201,408.15 and 78,228.20
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Solution
The fourth proportional to 134,434.10, 201,408.15 and 78,228.20 is: 117,200.90
Step by Step Solution
- Step 1: Write the proportion equation
134,434.10 : 201,408.15 = 78,228.20 : x - Step 2: Convert to fraction form
134,434.10/201,408.15 = 78,228.20/x - Step 3: Cross multiply
134,434.10x = 201,408.15 × 78,228.20 - Step 4: Simplify right side
134,434.10x = 15,755,797,039.83 - Step 5: Solve for x
x = 15,755,797,039.83/134,434.10 - Step 6: Final answer
x = 117,200.90
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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.