Finding the Fourth Proportional to 138,473.54, 207,408.99 and 91,035.08
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Solution
The fourth proportional to 138,473.54, 207,408.99 and 91,035.08 is: 136,354.53
Step by Step Solution
- Step 1: Write the proportion equation
138,473.54 : 207,408.99 = 91,035.08 : x - Step 2: Convert to fraction form
138,473.54/207,408.99 = 91,035.08/x - Step 3: Cross multiply
138,473.54x = 207,408.99 × 91,035.08 - Step 4: Simplify right side
138,473.54x = 18,881,493,997.37 - Step 5: Solve for x
x = 18,881,493,997.37/138,473.54 - Step 6: Final answer
x = 136,354.53
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.