Finding the Fourth Proportional to 139,421.27, 192,400.99 and 75,759.08
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Solution
The fourth proportional to 139,421.27, 192,400.99 and 75,759.08 is: 104,547.33
Step by Step Solution
- Step 1: Write the proportion equation
139,421.27 : 192,400.99 = 75,759.08 : x - Step 2: Convert to fraction form
139,421.27/192,400.99 = 75,759.08/x - Step 3: Cross multiply
139,421.27x = 192,400.99 × 75,759.08 - Step 4: Simplify right side
139,421.27x = 14,576,121,993.49 - Step 5: Solve for x
x = 14,576,121,993.49/139,421.27 - Step 6: Final answer
x = 104,547.33
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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.