Finding the Fourth Proportional to 138,621.93, 207,945.99 and 38,782.14
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Solution
The fourth proportional to 138,621.93, 207,945.99 and 38,782.14 is: 58,176.87
Step by Step Solution
- Step 1: Write the proportion equation
138,621.93 : 207,945.99 = 38,782.14 : x - Step 2: Convert to fraction form
138,621.93/207,945.99 = 38,782.14/x - Step 3: Cross multiply
138,621.93x = 207,945.99 × 38,782.14 - Step 4: Simplify right side
138,621.93x = 8,064,590,496.62 - Step 5: Solve for x
x = 8,064,590,496.62/138,621.93 - Step 6: Final answer
x = 58,176.87
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.