Finding the Fourth Proportional to 128,070.45, 192,130.58 and 49,178.88
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Solution
The fourth proportional to 128,070.45, 192,130.58 and 49,178.88 is: 73,777.88
Step by Step Solution
- Step 1: Write the proportion equation
128,070.45 : 192,130.58 = 49,178.88 : x - Step 2: Convert to fraction form
128,070.45/192,130.58 = 49,178.88/x - Step 3: Cross multiply
128,070.45x = 192,130.58 × 49,178.88 - Step 4: Simplify right side
128,070.45x = 9,448,766,861.10 - Step 5: Solve for x
x = 9,448,766,861.10/128,070.45 - Step 6: Final answer
x = 73,777.88
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1.5x scale
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.