Finding the Fourth Proportional to 100,553.84, 138,784.56 and 58,106.60
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Solution
The fourth proportional to 100,553.84, 138,784.56 and 58,106.60 is: 80,198.82
Step by Step Solution
- Step 1: Write the proportion equation
100,553.84 : 138,784.56 = 58,106.60 : x - Step 2: Convert to fraction form
100,553.84/138,784.56 = 58,106.60/x - Step 3: Cross multiply
100,553.84x = 138,784.56 × 58,106.60 - Step 4: Simplify right side
100,553.84x = 8,064,298,914.10 - Step 5: Solve for x
x = 8,064,298,914.10/100,553.84 - Step 6: Final answer
x = 80,198.82
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.