Finding the Fourth Proportional to 131,539.80, 197,309.70 and 79,051.80
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Solution
The fourth proportional to 131,539.80, 197,309.70 and 79,051.80 is: 118,577.70
Step by Step Solution
- Step 1: Write the proportion equation
131,539.80 : 197,309.70 = 79,051.80 : x - Step 2: Convert to fraction form
131,539.80/197,309.70 = 79,051.80/x - Step 3: Cross multiply
131,539.80x = 197,309.70 × 79,051.80 - Step 4: Simplify right side
131,539.80x = 15,597,686,942.46 - Step 5: Solve for x
x = 15,597,686,942.46/131,539.80 - Step 6: Final answer
x = 118,577.70
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1.5x scale
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.