Finding the Fourth Proportional to 115,741.76, 159,728.16 and 67,994.68
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Solution
The fourth proportional to 115,741.76, 159,728.16 and 67,994.68 is: 93,835.32
Step by Step Solution
- Step 1: Write the proportion equation
115,741.76 : 159,728.16 = 67,994.68 : x - Step 2: Convert to fraction form
115,741.76/159,728.16 = 67,994.68/x - Step 3: Cross multiply
115,741.76x = 159,728.16 × 67,994.68 - Step 4: Simplify right side
115,741.76x = 10,860,665,126.19 - Step 5: Solve for x
x = 10,860,665,126.19/115,741.76 - Step 6: Final answer
x = 93,835.32
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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.