Finding the Fourth Proportional to 139,617.84, 192,674.92 and 75,955.68
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Solution
The fourth proportional to 139,617.84, 192,674.92 and 75,955.68 is: 104,820.09
Step by Step Solution
- Step 1: Write the proportion equation
139,617.84 : 192,674.92 = 75,955.68 : x - Step 2: Convert to fraction form
139,617.84/192,674.92 = 75,955.68/x - Step 3: Cross multiply
139,617.84x = 192,674.92 × 75,955.68 - Step 4: Simplify right side
139,617.84x = 14,634,754,567.55 - Step 5: Solve for x
x = 14,634,754,567.55/139,617.84 - Step 6: Final answer
x = 104,820.09
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1.5x scale
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.