Finding the Fourth Proportional to 148,644.50, 205,128.36 and 80,659.74
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Solution
The fourth proportional to 148,644.50, 205,128.36 and 80,659.74 is: 111,309.88
Step by Step Solution
- Step 1: Write the proportion equation
148,644.50 : 205,128.36 = 80,659.74 : x - Step 2: Convert to fraction form
148,644.50/205,128.36 = 80,659.74/x - Step 3: Cross multiply
148,644.50x = 205,128.36 × 80,659.74 - Step 4: Simplify right side
148,644.50x = 16,545,600,184.23 - Step 5: Solve for x
x = 16,545,600,184.23/148,644.50 - Step 6: Final answer
x = 111,309.88
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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.