Finding the Fourth Proportional to 138,621.18, 207,944.87 and 38,781.39
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Solution
The fourth proportional to 138,621.18, 207,944.87 and 38,781.39 is: 58,175.75
Step by Step Solution
- Step 1: Write the proportion equation
138,621.18 : 207,944.87 = 38,781.39 : x - Step 2: Convert to fraction form
138,621.18/207,944.87 = 38,781.39/x - Step 3: Cross multiply
138,621.18x = 207,944.87 × 38,781.39 - Step 4: Simplify right side
138,621.18x = 8,064,390,908.06 - Step 5: Solve for x
x = 8,064,390,908.06/138,621.18 - Step 6: Final answer
x = 58,175.75
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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.