Finding the Fourth Proportional to 90,856.18, 135,593.42 and 84,840.13
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Solution
The fourth proportional to 90,856.18, 135,593.42 and 84,840.13 is: 126,615.09
Step by Step Solution
- Step 1: Write the proportion equation
90,856.18 : 135,593.42 = 84,840.13 : x - Step 2: Convert to fraction form
90,856.18/135,593.42 = 84,840.13/x - Step 3: Cross multiply
90,856.18x = 135,593.42 × 84,840.13 - Step 4: Simplify right side
90,856.18x = 11,503,763,379.94 - Step 5: Solve for x
x = 11,503,763,379.94/90,856.18 - Step 6: Final answer
x = 126,615.09
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.