Finding the Fourth Proportional to 138,810.34, 191,558.69 and 75,147.99
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Solution
The fourth proportional to 138,810.34, 191,558.69 and 75,147.99 is: 103,704.45
Step by Step Solution
- Step 1: Write the proportion equation
138,810.34 : 191,558.69 = 75,147.99 : x - Step 2: Convert to fraction form
138,810.34/191,558.69 = 75,147.99/x - Step 3: Cross multiply
138,810.34x = 191,558.69 × 75,147.99 - Step 4: Simplify right side
138,810.34x = 14,395,250,520.53 - Step 5: Solve for x
x = 14,395,250,520.53/138,810.34 - Step 6: Final answer
x = 103,704.45
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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.