Finding the Fourth Proportional to 128,924.49, 177,913.01 and 71,560.46
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Solution
The fourth proportional to 128,924.49, 177,913.01 and 71,560.46 is: 98,751.88
Step by Step Solution
- Step 1: Write the proportion equation
128,924.49 : 177,913.01 = 71,560.46 : x - Step 2: Convert to fraction form
128,924.49/177,913.01 = 71,560.46/x - Step 3: Cross multiply
128,924.49x = 177,913.01 × 71,560.46 - Step 4: Simplify right side
128,924.49x = 12,731,535,588.22 - Step 5: Solve for x
x = 12,731,535,588.22/128,924.49 - Step 6: Final answer
x = 98,751.88
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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.