Finding the Fourth Proportional to 102,490.19, 153,782.76 and 39,289.19
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Solution
The fourth proportional to 102,490.19, 153,782.76 and 39,289.19 is: 58,951.99
Step by Step Solution
- Step 1: Write the proportion equation
102,490.19 : 153,782.76 = 39,289.19 : x - Step 2: Convert to fraction form
102,490.19/153,782.76 = 39,289.19/x - Step 3: Cross multiply
102,490.19x = 153,782.76 × 39,289.19 - Step 4: Simplify right side
102,490.19x = 6,042,000,076.36 - Step 5: Solve for x
x = 6,042,000,076.36/102,490.19 - Step 6: Final answer
x = 58,951.99
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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.