Finding the Fourth Proportional to 121,950.36, 182,980.08 and 77,565.60
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Solution
The fourth proportional to 121,950.36, 182,980.08 and 77,565.60 is: 116,383.09
Step by Step Solution
- Step 1: Write the proportion equation
121,950.36 : 182,980.08 = 77,565.60 : x - Step 2: Convert to fraction form
121,950.36/182,980.08 = 77,565.60/x - Step 3: Cross multiply
121,950.36x = 182,980.08 × 77,565.60 - Step 4: Simplify right side
121,950.36x = 14,192,959,693.25 - Step 5: Solve for x
x = 14,192,959,693.25/121,950.36 - Step 6: Final answer
x = 116,383.09
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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.