Finding the Fourth Proportional to 102,729.06, 141,809.74 and 62,455.68
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Solution
The fourth proportional to 102,729.06, 141,809.74 and 62,455.68 is: 86,215.37
Step by Step Solution
- Step 1: Write the proportion equation
102,729.06 : 141,809.74 = 62,455.68 : x - Step 2: Convert to fraction form
102,729.06/141,809.74 = 62,455.68/x - Step 3: Cross multiply
102,729.06x = 141,809.74 × 62,455.68 - Step 4: Simplify right side
102,729.06x = 8,856,823,742.32 - Step 5: Solve for x
x = 8,856,823,742.32/102,729.06 - Step 6: Final answer
x = 86,215.37
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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.