Finding the Fourth Proportional to 99,657.80, 149,486.70 and 47,169.80
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Solution
The fourth proportional to 99,657.80, 149,486.70 and 47,169.80 is: 70,754.70
Step by Step Solution
- Step 1: Write the proportion equation
99,657.80 : 149,486.70 = 47,169.80 : x - Step 2: Convert to fraction form
99,657.80/149,486.70 = 47,169.80/x - Step 3: Cross multiply
99,657.80x = 149,486.70 × 47,169.80 - Step 4: Simplify right side
99,657.80x = 7,051,257,741.66 - Step 5: Solve for x
x = 7,051,257,741.66/99,657.80 - Step 6: Final answer
x = 70,754.70
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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.