Finding the Fourth Proportional to 105,219.02, 145,202.18 and 57,472.49
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Solution
The fourth proportional to 105,219.02, 145,202.18 and 57,472.49 is: 79,311.99
Step by Step Solution
- Step 1: Write the proportion equation
105,219.02 : 145,202.18 = 57,472.49 : x - Step 2: Convert to fraction form
105,219.02/145,202.18 = 57,472.49/x - Step 3: Cross multiply
105,219.02x = 145,202.18 × 57,472.49 - Step 4: Simplify right side
105,219.02x = 8,345,129,824.65 - Step 5: Solve for x
x = 8,345,129,824.65/105,219.02 - Step 6: Final answer
x = 79,311.99
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1.5x scale
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.