Finding the Fourth Proportional to 121,877.21, 182,778.56 and 42,972.99
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Solution
The fourth proportional to 121,877.21, 182,778.56 and 42,972.99 is: 64,446.35
Step by Step Solution
- Step 1: Write the proportion equation
121,877.21 : 182,778.56 = 42,972.99 : x - Step 2: Convert to fraction form
121,877.21/182,778.56 = 42,972.99/x - Step 3: Cross multiply
121,877.21x = 182,778.56 × 42,972.99 - Step 4: Simplify right side
121,877.21x = 7,854,541,231.09 - Step 5: Solve for x
x = 7,854,541,231.09/121,877.21 - Step 6: Final answer
x = 64,446.35
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.