Finding the Fourth Proportional to 120,095.21, 165,739.99 and 66,379.08
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Solution
The fourth proportional to 120,095.21, 165,739.99 and 66,379.08 is: 91,607.88
Step by Step Solution
- Step 1: Write the proportion equation
120,095.21 : 165,739.99 = 66,379.08 : x - Step 2: Convert to fraction form
120,095.21/165,739.99 = 66,379.08/x - Step 3: Cross multiply
120,095.21x = 165,739.99 × 66,379.08 - Step 4: Simplify right side
120,095.21x = 11,001,666,894.81 - Step 5: Solve for x
x = 11,001,666,894.81/120,095.21 - Step 6: Final answer
x = 91,607.88
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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.