Finding the Fourth Proportional to 134,879.20, 202,318.80 and 72,671.20
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Solution
The fourth proportional to 134,879.20, 202,318.80 and 72,671.20 is: 109,006.80
Step by Step Solution
- Step 1: Write the proportion equation
134,879.20 : 202,318.80 = 72,671.20 : x - Step 2: Convert to fraction form
134,879.20/202,318.80 = 72,671.20/x - Step 3: Cross multiply
134,879.20x = 202,318.80 × 72,671.20 - Step 4: Simplify right side
134,879.20x = 14,702,749,978.56 - Step 5: Solve for x
x = 14,702,749,978.56/134,879.20 - Step 6: Final answer
x = 109,006.80
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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.