Finding the Fourth Proportional to 142,719.75, 197,213.07 and 135,801.99
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Solution
The fourth proportional to 142,719.75, 197,213.07 and 135,801.99 is: 187,653.97
Step by Step Solution
- Step 1: Write the proportion equation
142,719.75 : 197,213.07 = 135,801.99 : x - Step 2: Convert to fraction form
142,719.75/197,213.07 = 135,801.99/x - Step 3: Cross multiply
142,719.75x = 197,213.07 × 135,801.99 - Step 4: Simplify right side
142,719.75x = 26,781,927,469.07 - Step 5: Solve for x
x = 26,781,927,469.07/142,719.75 - Step 6: Final answer
x = 187,653.97
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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.