Finding the Fourth Proportional to 90,741.42, 135,500.49 and 74,134.26
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Solution
The fourth proportional to 90,741.42, 135,500.49 and 74,134.26 is: 110,701.69
Step by Step Solution
- Step 1: Write the proportion equation
90,741.42 : 135,500.49 = 74,134.26 : x - Step 2: Convert to fraction form
90,741.42/135,500.49 = 74,134.26/x - Step 3: Cross multiply
90,741.42x = 135,500.49 × 74,134.26 - Step 4: Simplify right side
90,741.42x = 10,045,228,555.79 - Step 5: Solve for x
x = 10,045,228,555.79/90,741.42 - Step 6: Final answer
x = 110,701.69
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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.