Finding the Fourth Proportional to 128,926.44, 193,457.70 and 69,751.08
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Solution
The fourth proportional to 128,926.44, 193,457.70 and 69,751.08 is: 104,663.43
Step by Step Solution
- Step 1: Write the proportion equation
128,926.44 : 193,457.70 = 69,751.08 : x - Step 2: Convert to fraction form
128,926.44/193,457.70 = 69,751.08/x - Step 3: Cross multiply
128,926.44x = 193,457.70 × 69,751.08 - Step 4: Simplify right side
128,926.44x = 13,493,883,509.32 - Step 5: Solve for x
x = 13,493,883,509.32/128,926.44 - Step 6: Final answer
x = 104,663.43
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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.