Finding the Fourth Proportional to 126,434.93, 174,480.05 and 72,718.56
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Solution
The fourth proportional to 126,434.93, 174,480.05 and 72,718.56 is: 100,351.53
Step by Step Solution
- Step 1: Write the proportion equation
126,434.93 : 174,480.05 = 72,718.56 : x - Step 2: Convert to fraction form
126,434.93/174,480.05 = 72,718.56/x - Step 3: Cross multiply
126,434.93x = 174,480.05 × 72,718.56 - Step 4: Simplify right side
126,434.93x = 12,687,937,621.14 - Step 5: Solve for x
x = 12,687,937,621.14/126,434.93 - Step 6: Final answer
x = 100,351.53
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.