Finding the Fourth Proportional to 130,299.20, 195,470.40 and 55,455.20
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Solution
The fourth proportional to 130,299.20, 195,470.40 and 55,455.20 is: 83,191.99
Step by Step Solution
- Step 1: Write the proportion equation
130,299.20 : 195,470.40 = 55,455.20 : x - Step 2: Convert to fraction form
130,299.20/195,470.40 = 55,455.20/x - Step 3: Cross multiply
130,299.20x = 195,470.40 × 55,455.20 - Step 4: Simplify right side
130,299.20x = 10,839,850,126.08 - Step 5: Solve for x
x = 10,839,850,126.08/130,299.20 - Step 6: Final answer
x = 83,191.99
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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.