Finding the Fourth Proportional to 139,926.68, 193,102.92 and 76,268.60
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Solution
The fourth proportional to 139,926.68, 193,102.92 and 76,268.60 is: 105,252.90
Step by Step Solution
- Step 1: Write the proportion equation
139,926.68 : 193,102.92 = 76,268.60 : x - Step 2: Convert to fraction form
139,926.68/193,102.92 = 76,268.60/x - Step 3: Cross multiply
139,926.68x = 193,102.92 × 76,268.60 - Step 4: Simplify right side
139,926.68x = 14,727,689,364.31 - Step 5: Solve for x
x = 14,727,689,364.31/139,926.68 - Step 6: Final answer
x = 105,252.90
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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.