Finding the Fourth Proportional to 99,965.80, 149,948.70 and 26,093.80
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Solution
The fourth proportional to 99,965.80, 149,948.70 and 26,093.80 is: 39,140.70
Step by Step Solution
- Step 1: Write the proportion equation
99,965.80 : 149,948.70 = 26,093.80 : x - Step 2: Convert to fraction form
99,965.80/149,948.70 = 26,093.80/x - Step 3: Cross multiply
99,965.80x = 149,948.70 × 26,093.80 - Step 4: Simplify right side
99,965.80x = 3,912,731,388.06 - Step 5: Solve for x
x = 3,912,731,388.06/99,965.80 - Step 6: Final answer
x = 39,140.70
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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.