Finding the Fourth Proportional to 138,619.99, 191,296.73 and 76,532.48
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Solution
The fourth proportional to 138,619.99, 191,296.73 and 76,532.48 is: 105,615.45
Step by Step Solution
- Step 1: Write the proportion equation
138,619.99 : 191,296.73 = 76,532.48 : x - Step 2: Convert to fraction form
138,619.99/191,296.73 = 76,532.48/x - Step 3: Cross multiply
138,619.99x = 191,296.73 × 76,532.48 - Step 4: Simplify right side
138,619.99x = 14,640,412,110.64 - Step 5: Solve for x
x = 14,640,412,110.64/138,619.99 - Step 6: Final answer
x = 105,615.45
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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.