Finding the Fourth Proportional to 120,140.08, 165,778.84 and 66,417.84
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Solution
The fourth proportional to 120,140.08, 165,778.84 and 66,417.84 is: 91,648.62
Step by Step Solution
- Step 1: Write the proportion equation
120,140.08 : 165,778.84 = 66,417.84 : x - Step 2: Convert to fraction form
120,140.08/165,778.84 = 66,417.84/x - Step 3: Cross multiply
120,140.08x = 165,778.84 × 66,417.84 - Step 4: Simplify right side
120,140.08x = 11,010,672,470.51 - Step 5: Solve for x
x = 11,010,672,470.51/120,140.08 - Step 6: Final answer
x = 91,648.62
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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.