Finding the Fourth Proportional to 128,933.21, 193,395.51 and 53,029.13
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Solution
The fourth proportional to 128,933.21, 193,395.51 and 53,029.13 is: 79,541.92
Step by Step Solution
- Step 1: Write the proportion equation
128,933.21 : 193,395.51 = 53,029.13 : x - Step 2: Convert to fraction form
128,933.21/193,395.51 = 53,029.13/x - Step 3: Cross multiply
128,933.21x = 193,395.51 × 53,029.13 - Step 4: Simplify right side
128,933.21x = 10,255,594,674.23 - Step 5: Solve for x
x = 10,255,594,674.23/128,933.21 - Step 6: Final answer
x = 79,541.92
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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.