Finding the Fourth Proportional to 143,221.23, 197,645.60 and 79,559.08
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Solution
The fourth proportional to 143,221.23, 197,645.60 and 79,559.08 is: 109,791.70
Step by Step Solution
- Step 1: Write the proportion equation
143,221.23 : 197,645.60 = 79,559.08 : x - Step 2: Convert to fraction form
143,221.23/197,645.60 = 79,559.08/x - Step 3: Cross multiply
143,221.23x = 197,645.60 × 79,559.08 - Step 4: Simplify right side
143,221.23x = 15,724,501,806.83 - Step 5: Solve for x
x = 15,724,501,806.83/143,221.23 - Step 6: Final answer
x = 109,791.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.