Finding the Fourth Proportional to 128,533.24, 177,342.24 and 74,072.08
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Solution
The fourth proportional to 128,533.24, 177,342.24 and 74,072.08 is: 102,200.09
Step by Step Solution
- Step 1: Write the proportion equation
128,533.24 : 177,342.24 = 74,072.08 : x - Step 2: Convert to fraction form
128,533.24/177,342.24 = 74,072.08/x - Step 3: Cross multiply
128,533.24x = 177,342.24 × 74,072.08 - Step 4: Simplify right side
128,533.24x = 13,136,108,588.66 - Step 5: Solve for x
x = 13,136,108,588.66/128,533.24 - Step 6: Final answer
x = 102,200.09
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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.