Finding the Fourth Proportional to 138,509.99, 207,801.99 and 49,764.26
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Solution
The fourth proportional to 138,509.99, 207,801.99 and 49,764.26 is: 74,659.69
Step by Step Solution
- Step 1: Write the proportion equation
138,509.99 : 207,801.99 = 49,764.26 : x - Step 2: Convert to fraction form
138,509.99/207,801.99 = 49,764.26/x - Step 3: Cross multiply
138,509.99x = 207,801.99 × 49,764.26 - Step 4: Simplify right side
138,509.99x = 10,341,111,999.12 - Step 5: Solve for x
x = 10,341,111,999.12/138,509.99 - Step 6: Final answer
x = 74,659.69
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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.