Finding the Fourth Proportional to 158,239.63, 218,370.99 and 86,624.23
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Solution
The fourth proportional to 158,239.63, 218,370.99 and 86,624.23 is: 119,541.60
Step by Step Solution
- Step 1: Write the proportion equation
158,239.63 : 218,370.99 = 86,624.23 : x - Step 2: Convert to fraction form
158,239.63/218,370.99 = 86,624.23/x - Step 3: Cross multiply
158,239.63x = 218,370.99 × 86,624.23 - Step 4: Simplify right side
158,239.63x = 18,916,218,863.09 - Step 5: Solve for x
x = 18,916,218,863.09/158,239.63 - Step 6: Final answer
x = 119,541.60
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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.