Finding the Fourth Proportional to 105,102.11, 145,043.97 and 57,358.54
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Solution
The fourth proportional to 105,102.11, 145,043.97 and 57,358.54 is: 79,156.45
Step by Step Solution
- Step 1: Write the proportion equation
105,102.11 : 145,043.97 = 57,358.54 : x - Step 2: Convert to fraction form
105,102.11/145,043.97 = 57,358.54/x - Step 3: Cross multiply
105,102.11x = 145,043.97 × 57,358.54 - Step 4: Simplify right side
105,102.11x = 8,319,510,355.00 - Step 5: Solve for x
x = 8,319,510,355.00/105,102.11 - Step 6: Final answer
x = 79,156.45
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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.