Finding the Fourth Proportional to 171,815.60, 257,619.84 and 77,028.63
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Solution
The fourth proportional to 171,815.60, 257,619.84 and 77,028.63 is: 115,496.52
Step by Step Solution
- Step 1: Write the proportion equation
171,815.60 : 257,619.84 = 77,028.63 : x - Step 2: Convert to fraction form
171,815.60/257,619.84 = 77,028.63/x - Step 3: Cross multiply
171,815.60x = 257,619.84 × 77,028.63 - Step 4: Simplify right side
171,815.60x = 19,844,103,336.02 - Step 5: Solve for x
x = 19,844,103,336.02/171,815.60 - Step 6: Final answer
x = 115,496.52
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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.