Finding the Fourth Proportional to 131,721.26, 197,601.12 and 42,952.95
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Solution
The fourth proportional to 131,721.26, 197,601.12 and 42,952.95 is: 64,435.70
Step by Step Solution
- Step 1: Write the proportion equation
131,721.26 : 197,601.12 = 42,952.95 : x - Step 2: Convert to fraction form
131,721.26/197,601.12 = 42,952.95/x - Step 3: Cross multiply
131,721.26x = 197,601.12 × 42,952.95 - Step 4: Simplify right side
131,721.26x = 8,487,551,027.30 - Step 5: Solve for x
x = 8,487,551,027.30/131,721.26 - Step 6: Final answer
x = 64,435.70
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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.