Finding the Fourth Proportional to 128,349.44, 177,051.08 and 74,628.52
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Solution
The fourth proportional to 128,349.44, 177,051.08 and 74,628.52 is: 102,945.99
Step by Step Solution
- Step 1: Write the proportion equation
128,349.44 : 177,051.08 = 74,628.52 : x - Step 2: Convert to fraction form
128,349.44/177,051.08 = 74,628.52/x - Step 3: Cross multiply
128,349.44x = 177,051.08 × 74,628.52 - Step 4: Simplify right side
128,349.44x = 13,213,060,064.80 - Step 5: Solve for x
x = 13,213,060,064.80/128,349.44 - Step 6: Final answer
x = 102,945.99
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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.