Finding the Fourth Proportional to 120,173.68, 165,854.10 and 69,872.68
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Solution
The fourth proportional to 120,173.68, 165,854.10 and 69,872.68 is: 96,432.68
Step by Step Solution
- Step 1: Write the proportion equation
120,173.68 : 165,854.10 = 69,872.68 : x - Step 2: Convert to fraction form
120,173.68/165,854.10 = 69,872.68/x - Step 3: Cross multiply
120,173.68x = 165,854.10 × 69,872.68 - Step 4: Simplify right side
120,173.68x = 11,588,670,455.99 - Step 5: Solve for x
x = 11,588,670,455.99/120,173.68 - Step 6: Final answer
x = 96,432.68
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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.