Finding the Fourth Proportional to 126,372.06, 174,475.35 and 78,644.70
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Solution
The fourth proportional to 126,372.06, 174,475.35 and 78,644.70 is: 108,580.66
Step by Step Solution
- Step 1: Write the proportion equation
126,372.06 : 174,475.35 = 78,644.70 : x - Step 2: Convert to fraction form
126,372.06/174,475.35 = 78,644.70/x - Step 3: Cross multiply
126,372.06x = 174,475.35 × 78,644.70 - Step 4: Simplify right side
126,372.06x = 13,721,561,558.15 - Step 5: Solve for x
x = 13,721,561,558.15/126,372.06 - Step 6: Final answer
x = 108,580.66
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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.