Finding the Fourth Proportional to 139,952.68, 193,125.02 and 78,708.04
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Solution
The fourth proportional to 139,952.68, 193,125.02 and 78,708.04 is: 108,611.65
Step by Step Solution
- Step 1: Write the proportion equation
139,952.68 : 193,125.02 = 78,708.04 : x - Step 2: Convert to fraction form
139,952.68/193,125.02 = 78,708.04/x - Step 3: Cross multiply
139,952.68x = 193,125.02 × 78,708.04 - Step 4: Simplify right side
139,952.68x = 15,200,490,922.81 - Step 5: Solve for x
x = 15,200,490,922.81/139,952.68 - Step 6: Final answer
x = 108,611.65
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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.