Finding the Fourth Proportional to 140,415.84, 210,676.37 and 72,905.74
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Solution
The fourth proportional to 140,415.84, 210,676.37 and 72,905.74 is: 109,385.92
Step by Step Solution
- Step 1: Write the proportion equation
140,415.84 : 210,676.37 = 72,905.74 : x - Step 2: Convert to fraction form
140,415.84/210,676.37 = 72,905.74/x - Step 3: Cross multiply
140,415.84x = 210,676.37 × 72,905.74 - Step 4: Simplify right side
140,415.84x = 15,359,515,764.14 - Step 5: Solve for x
x = 15,359,515,764.14/140,415.84 - Step 6: Final answer
x = 109,385.92
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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.