Finding the Fourth Proportional to 138,469.84, 207,686.26 and 38,621.68
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Solution
The fourth proportional to 138,469.84, 207,686.26 and 38,621.68 is: 57,927.35
Step by Step Solution
- Step 1: Write the proportion equation
138,469.84 : 207,686.26 = 38,621.68 : x - Step 2: Convert to fraction form
138,469.84/207,686.26 = 38,621.68/x - Step 3: Cross multiply
138,469.84x = 207,686.26 × 38,621.68 - Step 4: Simplify right side
138,469.84x = 8,021,191,042.58 - Step 5: Solve for x
x = 8,021,191,042.58/138,469.84 - Step 6: Final answer
x = 57,927.35
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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.