Finding the Fourth Proportional to 128,076.04, 192,129.38 and 39,317.88
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Solution
The fourth proportional to 128,076.04, 192,129.38 and 39,317.88 is: 58,981.52
Step by Step Solution
- Step 1: Write the proportion equation
128,076.04 : 192,129.38 = 39,317.88 : x - Step 2: Convert to fraction form
128,076.04/192,129.38 = 39,317.88/x - Step 3: Cross multiply
128,076.04x = 192,129.38 × 39,317.88 - Step 4: Simplify right side
128,076.04x = 7,554,119,907.31 - Step 5: Solve for x
x = 7,554,119,907.31/128,076.04 - Step 6: Final answer
x = 58,981.52
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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.