Finding the Fourth Proportional to 111,194.60, 153,437.09 and 63,438.75
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Solution
The fourth proportional to 111,194.60, 153,437.09 and 63,438.75 is: 87,538.94
Step by Step Solution
- Step 1: Write the proportion equation
111,194.60 : 153,437.09 = 63,438.75 : x - Step 2: Convert to fraction form
111,194.60/153,437.09 = 63,438.75/x - Step 3: Cross multiply
111,194.60x = 153,437.09 × 63,438.75 - Step 4: Simplify right side
111,194.60x = 9,733,856,876.04 - Step 5: Solve for x
x = 9,733,856,876.04/111,194.60 - Step 6: Final answer
x = 87,538.94
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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.