Finding the Fourth Proportional to 158,135.38, 218,223.07 and 86,515.99
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Solution
The fourth proportional to 158,135.38, 218,223.07 and 86,515.99 is: 119,390.01
Step by Step Solution
- Step 1: Write the proportion equation
158,135.38 : 218,223.07 = 86,515.99 : x - Step 2: Convert to fraction form
158,135.38/218,223.07 = 86,515.99/x - Step 3: Cross multiply
158,135.38x = 218,223.07 × 86,515.99 - Step 4: Simplify right side
158,135.38x = 18,879,784,666.69 - Step 5: Solve for x
x = 18,879,784,666.69/158,135.38 - Step 6: Final answer
x = 119,390.01
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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.