Finding the Fourth Proportional to 103,623.64, 155,435.45 and 68,555.09
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Solution
The fourth proportional to 103,623.64, 155,435.45 and 68,555.09 is: 102,832.63
Step by Step Solution
- Step 1: Write the proportion equation
103,623.64 : 155,435.45 = 68,555.09 : x - Step 2: Convert to fraction form
103,623.64/155,435.45 = 68,555.09/x - Step 3: Cross multiply
103,623.64x = 155,435.45 × 68,555.09 - Step 4: Simplify right side
103,623.64x = 10,655,891,263.94 - Step 5: Solve for x
x = 10,655,891,263.94/103,623.64 - Step 6: Final answer
x = 102,832.63
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1.5x scale
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.