Finding the Fourth Proportional to 131,909.72, 197,930.18 and 105,282.99
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Solution
The fourth proportional to 131,909.72, 197,930.18 and 105,282.99 is: 157,976.85
Step by Step Solution
- Step 1: Write the proportion equation
131,909.72 : 197,930.18 = 105,282.99 : x - Step 2: Convert to fraction form
131,909.72/197,930.18 = 105,282.99/x - Step 3: Cross multiply
131,909.72x = 197,930.18 × 105,282.99 - Step 4: Simplify right side
131,909.72x = 20,838,681,424.85 - Step 5: Solve for x
x = 20,838,681,424.85/131,909.72 - Step 6: Final answer
x = 157,976.85
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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.