Finding the Fourth Proportional to 189,657.32, 261,779.24 and 117,994.60
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Solution
The fourth proportional to 189,657.32, 261,779.24 and 117,994.60 is: 162,864.99
Step by Step Solution
- Step 1: Write the proportion equation
189,657.32 : 261,779.24 = 117,994.60 : x - Step 2: Convert to fraction form
189,657.32/261,779.24 = 117,994.60/x - Step 3: Cross multiply
189,657.32x = 261,779.24 × 117,994.60 - Step 4: Simplify right side
189,657.32x = 30,888,536,712.10 - Step 5: Solve for x
x = 30,888,536,712.10/189,657.32 - Step 6: Final answer
x = 162,864.99
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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.