Finding the Fourth Proportional to 158,297.43, 218,450.80 and 85,701.08
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Solution
The fourth proportional to 158,297.43, 218,450.80 and 85,701.08 is: 118,267.68
Step by Step Solution
- Step 1: Write the proportion equation
158,297.43 : 218,450.80 = 85,701.08 : x - Step 2: Convert to fraction form
158,297.43/218,450.80 = 85,701.08/x - Step 3: Cross multiply
158,297.43x = 218,450.80 × 85,701.08 - Step 4: Simplify right side
158,297.43x = 18,721,469,818.74 - Step 5: Solve for x
x = 18,721,469,818.74/158,297.43 - Step 6: Final answer
x = 118,267.68
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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.