Finding the Fourth Proportional to 126,875.70, 190,313.55 and 115,211.70
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Solution
The fourth proportional to 126,875.70, 190,313.55 and 115,211.70 is: 172,817.55
Step by Step Solution
- Step 1: Write the proportion equation
126,875.70 : 190,313.55 = 115,211.70 : x - Step 2: Convert to fraction form
126,875.70/190,313.55 = 115,211.70/x - Step 3: Cross multiply
126,875.70x = 190,313.55 × 115,211.70 - Step 4: Simplify right side
126,875.70x = 21,926,347,628.54 - Step 5: Solve for x
x = 21,926,347,628.54/126,875.70 - Step 6: Final answer
x = 172,817.55
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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.