Finding the Fourth Proportional to 127,958.13, 191,781.53 and 90,528.99
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Solution
The fourth proportional to 127,958.13, 191,781.53 and 90,528.99 is: 135,683.35
Step by Step Solution
- Step 1: Write the proportion equation
127,958.13 : 191,781.53 = 90,528.99 : x - Step 2: Convert to fraction form
127,958.13/191,781.53 = 90,528.99/x - Step 3: Cross multiply
127,958.13x = 191,781.53 × 90,528.99 - Step 4: Simplify right side
127,958.13x = 17,361,788,211.55 - Step 5: Solve for x
x = 17,361,788,211.55/127,958.13 - Step 6: Final answer
x = 135,683.35
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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.