Finding the Fourth Proportional to 140,500.19, 193,893.12 and 76,842.09
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Solution
The fourth proportional to 140,500.19, 193,893.12 and 76,842.09 is: 106,043.65
Step by Step Solution
- Step 1: Write the proportion equation
140,500.19 : 193,893.12 = 76,842.09 : x - Step 2: Convert to fraction form
140,500.19/193,893.12 = 76,842.09/x - Step 3: Cross multiply
140,500.19x = 193,893.12 × 76,842.09 - Step 4: Simplify right side
140,500.19x = 14,899,152,577.42 - Step 5: Solve for x
x = 14,899,152,577.42/140,500.19 - Step 6: Final answer
x = 106,043.65
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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.