Finding the Fourth Proportional to 129,486.78, 193,948.20 and 62,785.68
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Solution
The fourth proportional to 129,486.78, 193,948.20 and 62,785.68 is: 94,041.80
Step by Step Solution
- Step 1: Write the proportion equation
129,486.78 : 193,948.20 = 62,785.68 : x - Step 2: Convert to fraction form
129,486.78/193,948.20 = 62,785.68/x - Step 3: Cross multiply
129,486.78x = 193,948.20 × 62,785.68 - Step 4: Simplify right side
129,486.78x = 12,177,169,621.78 - Step 5: Solve for x
x = 12,177,169,621.78/129,486.78 - Step 6: Final answer
x = 94,041.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.