Finding the Fourth Proportional to 139,335.76, 192,284.76 and 75,674.80
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Solution
The fourth proportional to 139,335.76, 192,284.76 and 75,674.80 is: 104,431.99
Step by Step Solution
- Step 1: Write the proportion equation
139,335.76 : 192,284.76 = 75,674.80 : x - Step 2: Convert to fraction form
139,335.76/192,284.76 = 75,674.80/x - Step 3: Cross multiply
139,335.76x = 192,284.76 × 75,674.80 - Step 4: Simplify right side
139,335.76x = 14,551,110,756.05 - Step 5: Solve for x
x = 14,551,110,756.05/139,335.76 - Step 6: Final answer
x = 104,431.99
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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.