Finding the Fourth Proportional to 128,953.57, 193,368.14 and 54,053.60
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Solution
The fourth proportional to 128,953.57, 193,368.14 and 54,053.60 is: 81,054.32
Step by Step Solution
- Step 1: Write the proportion equation
128,953.57 : 193,368.14 = 54,053.60 : x - Step 2: Convert to fraction form
128,953.57/193,368.14 = 54,053.60/x - Step 3: Cross multiply
128,953.57x = 193,368.14 × 54,053.60 - Step 4: Simplify right side
128,953.57x = 10,452,244,092.30 - Step 5: Solve for x
x = 10,452,244,092.30/128,953.57 - Step 6: Final answer
x = 81,054.32
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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.