Finding the Fourth Proportional to 75,115.60, 112,673.40 and 68,203.60
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Solution
The fourth proportional to 75,115.60, 112,673.40 and 68,203.60 is: 102,305.40
Step by Step Solution
- Step 1: Write the proportion equation
75,115.60 : 112,673.40 = 68,203.60 : x - Step 2: Convert to fraction form
75,115.60/112,673.40 = 68,203.60/x - Step 3: Cross multiply
75,115.60x = 112,673.40 × 68,203.60 - Step 4: Simplify right side
75,115.60x = 7,684,731,504.24 - Step 5: Solve for x
x = 7,684,731,504.24/75,115.60 - Step 6: Final answer
x = 102,305.40
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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.