Finding the Fourth Proportional to 126,149.81, 174,078.82 and 72,396.99
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Solution
The fourth proportional to 126,149.81, 174,078.82 and 72,396.99 is: 99,903.31
Step by Step Solution
- Step 1: Write the proportion equation
126,149.81 : 174,078.82 = 72,396.99 : x - Step 2: Convert to fraction form
126,149.81/174,078.82 = 72,396.99/x - Step 3: Cross multiply
126,149.81x = 174,078.82 × 72,396.99 - Step 4: Simplify right side
126,149.81x = 12,602,782,681.25 - Step 5: Solve for x
x = 12,602,782,681.25/126,149.81 - Step 6: Final answer
x = 99,903.31
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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.