Finding the Fourth Proportional to 120,126.06, 165,766.74 and 66,407.88
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Solution
The fourth proportional to 120,126.06, 165,766.74 and 66,407.88 is: 91,638.88
Step by Step Solution
- Step 1: Write the proportion equation
120,126.06 : 165,766.74 = 66,407.88 : x - Step 2: Convert to fraction form
120,126.06/165,766.74 = 66,407.88/x - Step 3: Cross multiply
120,126.06x = 165,766.74 × 66,407.88 - Step 4: Simplify right side
120,126.06x = 11,008,217,777.91 - Step 5: Solve for x
x = 11,008,217,777.91/120,126.06 - Step 6: Final answer
x = 91,638.88
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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.