Finding the Fourth Proportional to 101,893.80, 152,840.70 and 74,245.80
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Solution
The fourth proportional to 101,893.80, 152,840.70 and 74,245.80 is: 111,368.70
Step by Step Solution
- Step 1: Write the proportion equation
101,893.80 : 152,840.70 = 74,245.80 : x - Step 2: Convert to fraction form
101,893.80/152,840.70 = 74,245.80/x - Step 3: Cross multiply
101,893.80x = 152,840.70 × 74,245.80 - Step 4: Simplify right side
101,893.80x = 11,347,780,044.06 - Step 5: Solve for x
x = 11,347,780,044.06/101,893.80 - Step 6: Final answer
x = 111,368.70
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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.