Finding the Fourth Proportional to 138,735.18, 191,455.08 and 75,072.99
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Solution
The fourth proportional to 138,735.18, 191,455.08 and 75,072.99 is: 103,601.02
Step by Step Solution
- Step 1: Write the proportion equation
138,735.18 : 191,455.08 = 75,072.99 : x - Step 2: Convert to fraction form
138,735.18/191,455.08 = 75,072.99/x - Step 3: Cross multiply
138,735.18x = 191,455.08 × 75,072.99 - Step 4: Simplify right side
138,735.18x = 14,373,105,742.72 - Step 5: Solve for x
x = 14,373,105,742.72/138,735.18 - Step 6: Final answer
x = 103,601.02
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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.