Finding the Fourth Proportional to 138,484.80, 207,728.75 and 38,638.94
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Solution
The fourth proportional to 138,484.80, 207,728.75 and 38,638.94 is: 57,958.84
Step by Step Solution
- Step 1: Write the proportion equation
138,484.80 : 207,728.75 = 38,638.94 : x - Step 2: Convert to fraction form
138,484.80/207,728.75 = 38,638.94/x - Step 3: Cross multiply
138,484.80x = 207,728.75 × 38,638.94 - Step 4: Simplify right side
138,484.80x = 8,026,417,765.48 - Step 5: Solve for x
x = 8,026,417,765.48/138,484.80 - Step 6: Final answer
x = 57,958.84
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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.