Finding the Fourth Proportional to 139,657.60, 192,729.28 and 75,997.12
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Solution
The fourth proportional to 139,657.60, 192,729.28 and 75,997.12 is: 104,877.00
Step by Step Solution
- Step 1: Write the proportion equation
139,657.60 : 192,729.28 = 75,997.12 : x - Step 2: Convert to fraction form
139,657.60/192,729.28 = 75,997.12/x - Step 3: Cross multiply
139,657.60x = 192,729.28 × 75,997.12 - Step 4: Simplify right side
139,657.60x = 14,646,870,219.67 - Step 5: Solve for x
x = 14,646,870,219.67/139,657.60 - Step 6: Final answer
x = 104,877.00
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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.