Finding the Fourth Proportional to 139,401.68, 192,372.36 and 75,739.28
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Solution
The fourth proportional to 139,401.68, 192,372.36 and 75,739.28 is: 104,519.14
Step by Step Solution
- Step 1: Write the proportion equation
139,401.68 : 192,372.36 = 75,739.28 : x - Step 2: Convert to fraction form
139,401.68/192,372.36 = 75,739.28/x - Step 3: Cross multiply
139,401.68x = 192,372.36 × 75,739.28 - Step 4: Simplify right side
139,401.68x = 14,570,144,038.30 - Step 5: Solve for x
x = 14,570,144,038.30/139,401.68 - Step 6: Final answer
x = 104,519.14
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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.