Finding the Fourth Proportional to 153,984.70, 231,214.65 and 84,000.70
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Solution
The fourth proportional to 153,984.70, 231,214.65 and 84,000.70 is: 126,130.66
Step by Step Solution
- Step 1: Write the proportion equation
153,984.70 : 231,214.65 = 84,000.70 : x - Step 2: Convert to fraction form
153,984.70/231,214.65 = 84,000.70/x - Step 3: Cross multiply
153,984.70x = 231,214.65 × 84,000.70 - Step 4: Simplify right side
153,984.70x = 19,422,192,450.26 - Step 5: Solve for x
x = 19,422,192,450.26/153,984.70 - Step 6: Final answer
x = 126,130.66
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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.