Finding the Fourth Proportional to 135,942.26, 187,557.99 and 78,560.67
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Solution
The fourth proportional to 135,942.26, 187,557.99 and 78,560.67 is: 108,389.26
Step by Step Solution
- Step 1: Write the proportion equation
135,942.26 : 187,557.99 = 78,560.67 : x - Step 2: Convert to fraction form
135,942.26/187,557.99 = 78,560.67/x - Step 3: Cross multiply
135,942.26x = 187,557.99 × 78,560.67 - Step 4: Simplify right side
135,942.26x = 14,734,681,358.25 - Step 5: Solve for x
x = 14,734,681,358.25/135,942.26 - Step 6: Final answer
x = 108,389.26
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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.